Was a discussion on this board recently about talking to recruits on twitter, this is relevant:
http://espn.go.com/college-football/story/_/id/7657131/michigan-wolverines-players-tweets-violated-ncaa-rule (http://espn.go.com/college-football/story/_/id/7657131/michigan-wolverines-players-tweets-violated-ncaa-rule)
Good reminder, thanks for posting the link.