doin' graves at Cal Campus

this weekend. It's also my Saturday to draw blood at Berkley, so it'll be a No Sleep Saturday. Sunday I'm free, and I have the following choices for volunteer activities:

1. Do bike parking with the bicycle coalition down at Halloween in the Castro.
2. Do support services (I have no idea what this entails, other than being courteous to drunk persons) with SFSI down at the aforementioned Halloween in the Castro.
3. Attending a party with bfc folks where attendees will be calling newly registered voters in swing states to encourage them to not vote for Bush.

any suggestion which I should do?