Was watching Justin.TV and Alpha Geek at Gnomedex party when he chatted with Dave Winer for a few moments only for Dave to realize mid conversation that the conversation was going out live.
This is a question new media creators are going to have deal with. Filming and streaming live without disclosing it is not cool. Alpha Geek called the Justin.TV folks and asked for advice, seems form the call that they did not have much advice to give.
Alpha geek made a make-shift sign that said he was recording and streaming live. But this does not solve the problem that people are still being recorded without their knowledge and when people have paid to go to a private event and their conversations are being recorded then this is a real issue.