Too funny. You’ll recall we pointed out the other day that the McCain campaign’s Arlington headquarters was holding a big fire sale to liquidate all its computers, Blackberries and other office equipment and furniture. Well FOX 5’s Tisha Thompson says she bought one of the McCain Blackberries, and it was filled with confidential campaign information. Thompson reports that one Blackberry she purchased from the campaign for $20 “contained more than 50 phone numbers for people…