Thanks for your comment. I think a lot of those people broadcast during the day and it just happens to be the evening right now. Every app seems to have its own social atmosphere and community; I used to have a shareware app for users of eBay, and was even a PowerSeller for a short time; the user base of my app was closer to age 50 than 20. Do you have suggestions on features that could be useful to this userbase? I've noticed that almost everybody has pop music playing in the background, for example. Maybe something related to music and fashion? Thanks.
Justin.tv is not a porn site. We have admins watching for anything inappropriate at all times of day using a variety of admin tools; we also have flags a user can trigger in case they feel they should bring a channel to their attention.
Justin was about 20 when he started the lifecasting genre, and that's still about the age group that seems to want to share their life online the most. I get the list of live streams in the "social" category once a minute, and show those channels that have viewers (at least 5.) I don't think the age of the broadcaster is available in the API, but that sounds like a good addition.