Update (March 14, 2009): We are leaving La Paz so this address is no longer valid for sending us mail.
We joined the cruiser club here in La Paz. We're not sure that we're going to get much out of it, but they do offer a few services and it seems like the right thing to do. I'll mention it here particularly as you can send us mail at the club. I think that sending us packages is a little silly, but if you are so inclined our address would be:
s/v Scream (in transit) c/o Club Cruceros de La Paz A.C.
APDO Postal 366
La Paz, B.C.S. Mexico
Update (March 15, 2009): We got a lot out of Club Cruceros and we recommend joining. The club runs daily activities as well as a variety of special events. Monday through Saturday there is a VHF net on channel 22 where the club announces activities and cruisers help each other out finding local services. At 8:30 there is yoga near the club house, then from 9:30 to 10:30 there is coffee at the club house where you can meet other cruisers. You can also buy things like sauages and burritos at coffee hour. The club has a book and DVD movie exchange.