I used the expression 'guru' because in those 'followers' group you have one guy that says what he thinks is going to happen and then 5000 that will start trading on that. In this way it is often self-fulfilling prediction.
Some of these guys have web-sites and you pay the enter, other may have a media forum(one of the many e-zines) and some use simple public boards. The latest fashion certainly being all the twitter channels.
News 
Market Data 
Discover 
