They are probably fine for casual video, but from my (brief) time at the IndyMogul forums I learned a few things. One is that HD means very little, and another is that those Jazz and Aiptec and Flip and all those are garbage. It's better to get a cheap-ish Canon or Sony or whatever, even if it's not HD and still uses tapes. Also, the built in audio sucks on pretty much everything, so look for a mic jack.
That said, the Aipteks are cheap, have a (decent) reputation, and will probably do fine. You probably don't need the optical zoom, but it's not much more anyway. Some sort of mic jack or just a better mic modded on is almost essential, though. Audio is actually more important than video. People will suffer through bad video, but not bad audio.
Also, if you plan on doing gameplay videos, pick up an EasyCAP dongle from DX for $20. Pointing your camera at the TV really looks like flax. Especially if it's a CRT.
