Also check the various Symbian groups. Many of them will be migrating to Maemo, and may start having Meetups for those users. Not sure about NY/NJ, but check Meetup.com for any Linux or Maemo groups. I'm pretty sure there's one in your area. Maemo may become the most popular Linux OS if this goes commercially well, so Maemo will surely be a part of most Maemo groups soon.