Again, the hypocrisy issue is what is important here. Obama has been accusing McCain of being "in the pocket of big oil..."
Update: More info on the personal contributions Obama has received from the oil industry. Opensecrets.org reports the Center for Responsible Politics was,
"surprised to notice that it's actually Obama who has received more from the pockets of employees at several of Big Oil's biggest and most recognizable companies. Tallying contributions by employees in the industry and their families, we found that Exxon, Chevron and BP have all contributed more money to Obama than to McCain.”
The RNC issued this response:
“Barack Obama’s attacks on John McCain demonstrate very poor judgment on his part, given that he voted for the 2005 energy bill and John McCain did not, and given that he has taken the most money from Big Oil’s very biggest.”—Liz Mair, RNC Spokeswoman