Billionaire entrepreneur Mark Cuban is moving the Dallas Mavericks and 70 other companies he’s invested in off of Facebook (or at least away from emphasizing it), in favor of Twitter, Tumbler, and possibly even the new MySpace. Cuban is miffed at the social network charging thousands of dollars to reach his existing audience through promoted posts. Given the broad response to this new policy, it’s fair to say that Cuban is saying publicly (and acting on) what others have been thinking for weeks. We’ll be watching for Facebook’s response and any impact on the company’s revenue as a result. [Source ReadWrtie]