I think in order for this argument to hold true, you'd have to go back for four months (or longer!) and do the exact same thing that the OP did. That is: pick every single article where Arrington has predicted something based on an anonymous source and award points based on whether it was true or not.
Doesn't appear to me that the blogger was cherry picking in any way.
Doesn't appear to me that the blogger was cherry picking in any way.