Email's best for me, because I can send/receive when I feel ready to, and I can take as long as I need to. Nobody can interrupt me or be brash and intimidating, and if I think I'm pulling my punches, talking past the point, being irrelevent, losing my temper, overstating my case, or not making myself clear, I can edit the stuff until I'm happy with it, or go and do something else for a while till I'm in the right mood. It's amazing how much better I can be on a "second pass" - sometimes at first glance I can think an email quite impossible to reply to properly, but if I just take a break and let the ideas percolate into my brain, then it can magically become a lot clearer how I should respond. I need time, you see. I can't just wax lyrical to order. Sometimes I have to chew an idea over for a day or two before I'm ready to address it. I hardly ever communicate as well with the spoken word or with any of those other quick forms of dialogue.
It's a pity though, because I can see how much quicker it would be to talk face-to-face........in theory face-to-face (etc) is better because each person has the opportunity to immediately put things straight, for example if I start telling somebody a thing that they already know (or don't need to know), they can say "no I know that, but...." or "yes but what I really want to know is...." or if I start saying things they find upsetting then they can indicate that. All that can be achieved by email, but it would take a lot longer. There's a great example of how it can go wrong with snail mail, in a book by Woody Allen called "Getting Even" - it's 2 guys playing postal chess and because they can't see the board, they begin to disagree about where the pieces are, and each ends up thinking the other is insane.
The other advantage of face-to-face is that nobody can easily dodge questions or otherwise duck out of the dialogue. If you don't reply to an email, you can always blame it on your service provider, but if somebody asks a question to your face, then it's a lot more obvious if you're ignoring it. So I think it does make for greater honesty in some ways, and it's not without reason that a lot of people feel slightly suspicious about a person who doesn't seem to want to communicate that way. I'm sure that email etc. can be used to deceive.
In the days before the Web, my experience was that to influence somebody, sending a letter would have a weak effect, phoning them would have a nedium effect, and visiting them would have a strong effect. It always seemed to be that way with marketing and with attracting the opposite sex. So I suppose my Aspie disabilities can't have been all that much of a problem, at least when I was strongly motivated. When I'm strongly motivated I don't usually feel a lot of fatigue or anxiety (as long as I don't have to continue for too long), and in spite of being generally poor at face-to-face and telephones, if I prepare myself well then I can be surprisingly successful with those methods.
One thing I hate is when I phone somebody and they arrange to call me back.....because when they do, I'm nearly always focussing on something totally different by then, and just can't pull my brain out of one subject and into another at the drop of a hat. I seem to need things to happen at the right rate and at the right time before I can really get the best out of them. People seem to pick up that something's wrong and I think they tend to conclude that I'm not interested in them.
It can be nice to email a person AND meet them.......the emailed stuff is a great backup for making sure the more important unvoiced ideas don't fall by the wayside. Once or twice that's gone wrong, when the emailed stuff has become too detached from the spoken stuff, so it starts to feel like the email person and the real-life person are two different people, which feels very unnatural. But if the spoken stuff refers to the emailed stuff so that the two media are working together in harmony, it gets pretty good.
As for those other things, I don't use instant messaging or chat rooms, not even texting via mobile phone unless it's the only way there is. I feel really handicapped with those methods, probably because I haven't sussed out how to use them properly yet. I tend to put them down as "kid's stuff" which is probably wrong of me, as I'm sure they've got a lot going for them. I have a very strong feeling that communication is a real blessing, and the more forms of it we can use, the better life gets. Not that there's no place for solitude of course. I'd probably go completely ape if I couldn't shut it all out from time to time.