The best way to get in touch with me is probably to call 1-415-368-7744. Don't worry about the time - I keep programmer's hours. If I'm asleep, the phone will be off and you'll go through to the voicemail system.
Emailing deekoo at tentacle.net (PGP public key available on my invocation page), sending an ICQ message to 35848456, or an AIM message to ookeed, should also work. If you send me email, put the word 'yeemp' somewhere in the message so that my spam filter will know that your mail is real.