Although this doesn't apply to Google Docs, it's been pretty heavily publicized from day 1 that Wave is an open protocol, running on open software, so companies will be able to build and host their own private Wave servers.

Based on what I have read of Wave thus far, I am highly confident that it will support the sort of non-text collaboration you've described (there are already drop-in chessboards and the like for "collaboration" in the form of games). I would actually be mildly surprised if third-party devs haven't already started prototypes of Wave-based painting, spreadsheet, and musical composition apps.

Personally? I mostly listen to podcasts - short fiction, talking heads of the tech world, that kind of thing. Not music. When you're dealing with a single person talking (as in, say, most short fiction or audiobooks - or a phone call, for that matter), they either won't use stereo or both channels will carry identical audio. Panel discussions may use stereo, but they often don't. Even when they do, you don't really lose anything by mixing it down to mono, since it's just being done to virtually position the panel members, not to create any effects that enhance the experience (or at least it doesn't enhance my experience).

Just because stereo matters for music doesn't mean that it matters for audio recordings in general.

I didn't start using keyboards seriously until I was 8 (I had played with my mom's typewriter before that, but doubt I picked up any real speed there) and my experiences are much the same as yours. I spent a few years doing temp work after college and consistently tested in the upper-60s wpm on their tests, occasionally getting astonished comments from the temp agency's workers that I'd completed the test so quickly and with so few errors.

Also like you, I spend many hours a day on a keyboard and have never shown any signs of RSI or similar issues. I'm not sure I would entirely attribute that to the non-"standard" typing technique, though - I expect that my tendency to do everything by keyboard and rarely reaching for the mouse contributes as well.

"Proper" typing technique is highly, highly overrated.

I trust they won't send any of my "personal" information (name, telephone number, personal e-mails)...

You've just hit on exactly what I don't get about this blurb's claims of these games "collecting personal information":

When was the last time you entered your (real) name, a phone number, an email address, or any other piece of personal information into a game during play? In my case, that would be approximately... never, IIRC.

Any information I've ever entered has been during registration, not gameplay, and that's already getting sent to the publisher whether they use in-game ads or not. Unless they're including local exploits to collect information from other applications without the user's knowledge/consent, then I don't see any evidence of an actual privacy threat tied to the ads.