I have two online friends who I consider to be close friends, and the good thing is I can tell them just about everything. Also they're removed from any problem situations IRL so they can analyse what I tell them and not get hung up on emotion of the moment etc. OK so I can tell them stuff and it'll be biased, but they have a knack of picking up on that and asking me questions to find out the unbiased facts. They're both older than me - one by two years, the other by quite a few more, which means they have more wisdom than my RL friends. Also one of them's extremely, deaf and has really poor eyesight, so instead of straining to lip-read (which is often very inaccurate - only 30-40% of the English language can be lip-read) he knows exactly what I'm saying to him - his eyesight's good enough to be able to read the screen with some magnification.
Also the internet means you can choose whether or not to try to befriend somebody - you don't have to try to be polite for the sake of it. I'm really grateful for my online friends because they have changed some aspects of my life - they have given me wonderful advice. Plus online it easier to tell people things, even RL friends. It saves from tripping over my words when I'm nervous, and you can type something and read it through before you send it - it's saved me from digging myself into many holes!
Anyway, without the internet I'd not know a great deal about any of my interests to be honest. I'd also be extremely ignorant of things such as AS - I only know Aspie IRL and I don't know him at all well. He's great, but a few years younger, and a friend's brother, so it just would seem awkward trying to get to know him, to be honest. I'd also not know much about APD either, and the extra information (ie that which my consultant didn't tell me) has been extremely useful.
I'm so very grateful for my online friends, and also my online acquaintances
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Spectrumite ... somewhere.