Official hashtag for Twitter / Diaspora / Facebook is #ButtonwoodSF. You can use this to coordinate trades online and promote the meetup.
1. No force.
2. No fraud.
3. No coercion.
4. Have fun!
To support the development of this meetup group (ie promotional materials, a real website, private location, etc), you can send Bitcoin donations to this address: 1MNX5SkSRCbZgstLemHGwSd6LLhPubWJRT