[JoelPM]

I don't have a Facebook account (and I refuse to get one), so in the unlikely event that people like me are the sole target group of your application/website, yes - requiring FB connect will kill your startup =)

But like I said, it's unlikely.

[onwardly]

True.

For one, most people in our target age demographic (say 16 - 34) do have FB accounts. The other assumption is that if you don't have a FB account, you're less likely to want to talk with strangers over videochat.

[NinetyNine]

I'm 20 years old, tech savy, and I'm weary of facebook connect simply because other cross-site facebook tools have been exploited before, particularly the like-button click-jacking worm (Troj/iframe-ET?) which has filled my own feed with spam messages. I removed my facebook account a few months ago, so I wouldn't be able to use it anyways, but if your site doesn't need real-person verification, then don't even bother, a lot of users prefer a nick over a name, and a sign up form isn't as big of a deal as potentially giving away your facebook credentials to a spammer using an unknown exploit.