People working in open source have limited opportunities to meet each other in person. My own experience is that meeting someone in person, even if it is only once, can be a help in working with them in the virtual world. The Dopplr service is a social networking application oriented towards people who travel. I’m already using it to find out who is going to at OSCON and ApacheCon US later this year. Meeting folks from various open source communities in person has been an enriching experience for me, and I’m glad to have help at making that easier.
Let me know if you want a Dopplr invite.