she's cindy cohn of the electronic frontier foundation. she joins us now from san francisco. cindy, for those people who aren't familiar with what e.f.f. does, a nutshell summary. >> well, we work to make sure that when you go online, your rights go with you. so, we spend lot of time thinking about free speech and privacy, and how to make sure that the internet is the place that we all want to be. >> sreenivasan: tell us of the constitutional protections in place for free speech and how they translate online. a lot of these public companies and private companies on the internet are going to say, "hey, we're well within our rights. we are the ones that host these communities, and we want to figure out what kind of speech works." >> they're absolutely within their rights to kick off these... these folks. there's no legal problem here. there's no first amendment problem here because they're private companies. so they're within their rights. you know, what we're worried about is that this... this tactic is not a new tactic. and we think it's a very dangerous one. we have spent las