Ballotpedia is a Wikipedia-type site specifically dedicated to ballot measures and candidates running for office.
I've signed up as an editor, and just added information about the LPSF as the opponent on measures C and E (linked here):
http://ballotpedia.org/San_Francisco_City_and_County,_California_ballot_measures
The site does not seem to have an entry yet for Proposition G.
I was going to add Flash Gordon, the Libertarian running for BART board, as well, but if there is a page on the site for the BART election, I could not find it.
Love & Liberty,
((( starchild )))