LeBron James says he is keeping track of those in the media and around the world of the NBA who have been critical of him this off-season.

"Don't think for one min that I haven't been taking mental notes of everyone taking shots at me this summer," James wrote on his Twitter page. "And I mean everyone!"

James drew heavy criticism for his decision to join Dwyane Wade and Chris Bosh in Miami, as well as for the way he went about announcing the decision on live television.

Among those who have found fault with James is Michael Jordan, James' childhood idol.  Jordan said he would never had thought of playing with Magic Johnson and Larry Bird during his playing days.