Can you use chat roulette on iPad?
No, Chatroulette is written with Adobe Flash.
There are many possible ways to chat on the iPad. Two of the most popular IM client is BeejiveIM for iPad and IM+ Pro. Both provide native looking interface and are very user-friendly. Any other websites that provide a chat system may also work on the iPad mobile safari browser. From my experience, Google Chat and Facebook Chat work with a little lag. Cheers
It depends on how old you are. It certainly was bad for the German Tv-programme that was having a live show about chat roulette. But then something happened when they talked to a random person webcam and they had to cut very fast, I wont say anymore than that. Remember that it's strangers you talk to.
If your chatting with another iPad, IPod or iPhone user that has a camera on that device you can use FaceTime for this. Other apps to use are Skype and Tango if you want to chat with someone that is using a webcam on their computer, typically a Windows PC. I'm not familiar with Mac's or MacBooks so I am not sure how those work.