Adam Serwer explicitly opposes bringing Georgia into NATO on very practical grounds.
I don't think people should go hyperventilating about ABC News reporting that Sarah Palin said "war may be necessary" if Russia invades another country. For one thing, Obama's own (irresponsible, in my view) position that Georgia should be let into NATO implies a military obligation to preserve Georgia's security. Personally, I don't think NATO should be in the habit of letting in little countries that have a habit of starting wars with bigger countries that they can't finish without assistance, but that's just my childhood in D.C. talking. In my experience, the last person you want to be friends with is the little loudmouth dude who likes to start fights.
Adam's street-smart analysis is as sophisticated (and correct) as mine, but I have video here.