You can protest all you want. The deals have been done. It's all over but the shouting. If you really want change, you have to get out the brass knuckles and start fighting. Energize the progressives and get candidates to run against the incumbents that are holding the progressive agenda back.
If you are just going to protest and talk, they'll just keep giving you drips of change, something to talk about, but nothing substantive. If you are bailing on Obama then bail, otherwise you'll be scratching your head in 2012 about how the new Republican president got elected.
Don't waste your vote, vote Green or Independent in the next election.