Essentially, it's an auction of everything from custom fanfiction to hand-made jewelry. From the info page:
What is this?
Live Long And Marry is a fandom auction to benefit marriage equality. Bidding begins on July 1, 12:01 AM one minute after midnight Pacific Time, 2008, and closes on July 15, 12:01 AM one minute after midnight Pacific Time, 2008. Please do not bid until bidding opens.
What's the cause?
The auction will raise money for the fight against the California initiative which will legally destroy existing same-sex marriages and ban any further ones. If the initiative passes, it will write discrimination into the state constitution, annull existing marriages, and make Mr. Sulu cry.
How can I help?
You can bid on fanfic, original fic, vids, cookies, memorabilia, critique/betas, and much more! Or you can offer your skills and services as a writer, vidder, baker, knitter, or whatever else you'd like.