Well, this is why I'm not donating to Obama. I don't want him wasting my money on opening an office in Oklahoma.
To be fair, offices in Oklahoma are probably only going to be used to:
a) Get more donations for use in swing states
b) Be part of a positive-image that is the national 50-state campaign
c) Volunteer for phonebanks and whatnot in meaningful state
d) Influence national poll numbers to get more positive news coverage whenever they give a national poll.
e) There is a positive effect that I doubt few here acknowledge that goes like this. The better that people in Texas think of Obama, the better they'll defend (or attack less agressively) him at the dinner table/whatever with their relatives in meaningful states. This family contact probably should not be underestimated too much since these sorts of discussions are infinitely more persuasive and meaningful, especially when coming from a non-hackish family member, than a 30 second commercial during the news. These are people who share a good part of spreading the 'Obama is a Manchurian candidate in the pay of Bin Laden' rumor.