What is PSA?

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PSA Public Service Announcement
PSA Prostate-Specific Antigen (test)
PSA Photographic Society of America
PSA Professional Services Automation
PSA Pressure Sensitive Adhesive
PSA Public Service Association (New Zealand)
PSA Psoriatic Arthritis
PSA Pseudomonas Aeruginosa (pathogen)
PSA Pharmaceutical Society of Australia
PSA Pacific Southwest Airlines
PSA Polar Surface Area
PSA Psychosocial Assessment
PSA Pseudo-Spectral Acceleration (earthquakes)
PSA Professional Squash Association
PSA Plesk Server Administrator (SWsoft)
PSA Production Sharing Agreement
PSA Public Service Agreement (UK government)
PSA Professional Skaters Association (Rochester, MN, USA)
PSA Public Sector Accounting
PSA Pennsylvania State Archives
PSA Probabilistic Sensitivity Analysis (economics)
PSA Patient Services Assistant
PSA Plastic Surgery Associates (various locations)
PSA Poetry Society of America
PSA Personal Savings Account
PSA Private Sector Assessment
PSA Performance Spectrum Analyzer (Agilent Technologies)
PSA Proudly South African (marketing campaign)
PSA Particle-Size Analysis (Comparative grain size of soil, stone, and other building materials)
PSA Psychological First Aid
PSA Polysaccharide A (bacteria)
PSA Product Service Associate (various companies)
PSA Political Studies Association
PSA Passenger Service Agent (airlines)
PSA Police Service Area (Washington, DC)
PSA Police Service Area
PSA Petroleum Safety Authority (Norway)
PSA Philosophy of Science Association
PSA Pastel Society of America
PSA Platform Security Architecture (Arm Ltd.)
PSA Probabilistic Safety Assessment
PSA Poultry Science Association
PSA Private Security Authority (Ireland)
PSA Pediatric Services of America (various locations)
PSA Public Service Administration (various schools)
PSA Primary Service Area (various organizations)
PSA Professional Services Applications
PSA Physical Sector Address
PSA Personal Shopping Assistant
PSA Product Specific Attribute
PSA Process Save Area
PSA Prefixed Storage Area
PSA Peugeot Societe Anonyme
PSA Prefixed Save Area
PSA Portable Sport Audio
PSA Parallel Signature Analysis
PSA Provider Stationary Agent
PSA Program Start Address
PSA Print Server Appliance
PSA Php Site Admin
PSA Programa Social Agropecuario (Spanish: Agricultural Social Program; Argentina)
PSA Point Source Audio (Novato, CA)
PSA Problem Statement Analyzer
PSA Plataforma Solar de Almeria (Spain)
PSA Potato Sucrose Agar
PSA Port of Singapore Authority
PSA Purchase and Sale Agreement
PSA Postal Services Act (various locations)
PSA Public Securities Association
PSA Polysialic Acid
PSA Professional Services Agreement
PSA Public Service Alliance (various locations)
PSA Preferred Spin Axis (bowling)
PSA Passenger Shipping Association (UK shipping)
PSA Penal Substitutionary Atonement (Christianity)
PSA Planning and Service Area
PSA Public Service Activity (various schools)
PSA Partnership for a Secure America (bipartisan foreign policy initiative)
PSA Pakistani Students Association
PSA Personal Service Agentur (Deutsche Telekom inhouse employment agency)
PSA Pago por Servicios Ambientales (Spanish: Payment for Environmental Services; compensation program)
PSA Product Support Agreement
PSA Probabilistic Safety Analysis
PSA Pacific Sociological Association
PSA Parasternal Short Axis (cardiology)
PSA Planning Scheme Amendment (Australia)
PSA Pacific Science Association
PSA Production-Sharing Contract
PSA Pooling and Servicing Agreement
PSA Protection Suisse des Animaux
PSA Public Service Advertisement
PSA Patient Support Assistant (health care)
PSA Philmont Staff Association
PSA Post Shakedown Availability (US Navy)
PSA Pretrial Services Agency
PSA Property Settlement Agreement
PSA Pressure Swing Absorption
PSA Public Services Association
PSA Progressive Student Alliance
PSA Phycological Society of America
PSA Public Sector Agency
PSA Pseudoaneurysm
PSA Principal Staff Assistant (OSD)
PSA Private School Affidavit (California Department of Education)
PSA Protective Services for Adults
PSA Professional Staff Association (Maricopa County, AZ community college system)
PSA Property Services Agency
PSA Partido Socialista de Andalucía (Socialist Party of Andalucia, Spain)
PSA Protein Sequence Analysis
PSA Personal Satellite Assistant
PSA Physician Scarcity Area
PSA Project South Asia (digital library)
PSA Public Speaking Anxiety
PSA Public Sector Agreement
PSA Please See Attached (email threads)
PSA Pensacola Sports Association (Pensacola, FL)
PSA Protective Security Advisor
PSA Power Supply Adapter
PSA Professional Service Association
PSA Protein Specific Antigen
PSA Personal Search Agent (job search)
PSA Pacing System Analyzer
PSA Preliminary Site Assessment (environmental consulting)
PSA Parents Staff Association (various locations)
PSA Power System Analysis
PSA Professional Sales Associate
PSA Port Security Assessment
PSA Petroleum Supply Annual (US Department of Energy)
PSA Publication Services of America (lifestyle magazines; West Palm Beach, FL)
PSA Performance Stock Award (finance)
PSA Peugeot Société Anonyme (French company/manufacturer of Peugeot and Citroen vehicles)
PSA Perinatal Substance Abuse
PSA Personnel Support Activity
PSA Pervasive System Analyzer
PSA Persistent Staging Area (SAP Business Intelligence)
PSA Penguin Secret Agency (gaming clan)
PSA Product Sharing Agreement
PSA Partido Socialista Auténtico (Authentic Socialist Party, Argentina)
PSA Portrait Society of Atlanta (Atlanta, GA)
PSA Puget Soundkeeper Alliance
PSA Power Supply Agreement
PSA Professional Standards Advisory (Public Relations Society of America)
PSA Public Stadium Authority (Washington)
PSA Precision Strike Association
PSA Paralysis Society of America
PSA Project Smash Attack
PSA Potentiometric Stripping Analysis
PSA Protezione Svizzera degli Animali
PSA Psychology Students' Association
PSA Purchased Service(s) Agreement
PSA Patient Support Assembly (medical equipment)
PSA Port Support Activity
PSA Puget Sound Alliance (est. 1984; Washington)
PSA Pleasant Sunday Afternoon (UK rugby club)
PSA Parameter-Sweep Application
PSA Principal Scientific Advisor
PSA Partnership South Africa (US and South Africa)
PSA Parcel Shippers Association
PSA Protection Sports Association
PSA Phoenix Shooters Association (UK, target shooting)
PSA Peruvian Student Association (various organizations)
PSA Pressure Swing Adsorber
PSA Pooled Separate Account (IRS Form 5500)
PSA Programme on Space Applications (UN)
PSA Patient Staging Area
PSA Plymouth Society of Artists (UK)
PSA Pilot Symbol Assisted
PSA Project Support Agreement
PSA PolySubstance Abuse
PSA Plastic Surgery Addiction
PSA Philippine Statistical Association
PSA Presbyterian Student Association
PSA Prepayment Standard Assumption
PSA Pisa, Italy - G Galilei (Airport Code)
PSA Per Store Average
PSA Parrot Society of Australia
PSA Personal Service Assistant
PSA Programmable Services Architecture (Nortel)
PSA Product-Specific Attribute
PSA Pennsylvania Society of Anesthesiologists
PSA Potter Slash Archive (fanfiction)
PSA Philippine Society of Anesthesiologists
PSA Packet Switching ASIC (Cisco)
PSA Princeton Soccer Association (Princeton, NJ)
PSA Punjabi Students Association (Pakistan)
PSA Procedures & Standards Administration (of ANSI)
PSA Plant Systems Audit (USDA)
PSA Phase Shift Analysis
PSA Portable Sanitation Association International
PSA Province Senior Advisor (Vietnam)
PSA Program Support Agreement
PSA Provisional Site Acceptance
PSA President's Scout Award
PSA Personal Shopping Advisor
PSA Pre-Delivery Service Agent (network service payments)
PSA Pharmacy Service Associate
PSA Pot Smokers of America
PSA Proxy Signalling Agent
PSA Provisional System Acceptance
PSA Power Supplied to the Antenna
PSA Polarizer-Sample-Analyzer
PSA Pakistan Scrabble Association
PSA Public Service Ambassador
PSA Pay Systems of America (payroll processing company)
PSA Pulse Shaping Amplifier
PSA Pakistan Society of Anaesthesiologists
PSA Peel Summer Academy (Mississauga, Ontario, Canada)
PSA Port of Singapore Association
PSA Path Signature Analysis
PSA Pre-Sunrise Authorization (for AM radio stations)
PSA Professional Speakers Association of Europe
PSA Passenger Services Act of 1886
PSA Personal Sound Architecture
PSA Pseudo Stuck-At (Fault)
PSA Pleomorphic Salivary Gland Adenoma
PSA Pension Security Act (of 2003)
PSA Power Section Assembly
PSA Pelican Sailing Association
PSA Private Security Account
PSA Print Service Appliance
PSA Protocol Specific Annex (Winsock 2)
PSA Product Service Agreement
PSA Patrol Services Area
PSA Provisions Storage Assemblies
PSA Public Safety Activity (VRE)
PSA Production Support Application (SAP)
PSA Provision Stowage Assembly
PSA Predictive Support Awareness
PSA Premier School Agendas, Inc.
PSA Pedestrian Safety Assessment
PSA Pre-Solicitation Agreement
PSA Personal Salon Assistant
PSA Personnel Status Accounting
PSA Publishing Support Assistant
PSA Printer Subassembly
PSA Policyholder Surplus Accounts (insurance industry)
PSA Presidential Support Aircraft
PSA Project Support Agency
PSA Portsmouth Soccer Association
PSA Premier School Agendas Ltd (Canada)
PSA Pushdown Stack Automation
PSA Perfect Slot Allocation
PSA Planar Spaced Array
PSA Procedural Status Attribute
PSA Performance Specification Acquisition
PSA Pulse Stream Arithmetic
PSA Packaging Safety Assessment
PSA Professional Sports Authenticators/Authentication
PSA Phytochemical Society of Asia
PSA Prohibit Signaling Address (Bellcore)
PSA PSYOPS Support Activity
PSA Protection Switch Activated (Alcatel)
PSA Proposición Subordinada Adjetiva (Spanish grammar)
PSA Prolate Spheroidal Antenna
PSA Platform Services Agreement
PSA Post Shipment Advices (UK)
PSA Previous Service Agreement
PSA Prabhu Dasi Sisters of Ajmeer

So you know what it is then

^ I answered your question in that thread dude

PSA is often used online. It is sometimes short for 'personal self advice'.

e.g. "Just a psa, don't forget that you are loved and that you never should feel alone. I am always her for you!"

:lol: FFS

I thought it meant Fannies For Sale

I thought it meant Fannies For Sale