A "catch all" group supporting open-source development and developers that works closely with most of the above-mentioned groups: Devaamo (mailing list sign-up)
Afaik, the Helsinki MeeGo Network has not formed any new group. They are currently still using meetup.com for their network until further notice. You can follow the discussions there to see what they are doing and moving on to.
Portal: this portal will be kept online for the time being. However new user registration and new content creation will not be available. Some limited functionalities will be kept, e.g. LDP
LDP: The Helsinki LDP is now hosted with Helsinki Institute for Information Technology.Tampere LDP will be with Tampere Mobile Ninja Techies. We will be moving the device request/loan system to Devaamo's site soon, but please use the given links in the meantime.
Social Media and other channels: Twitter/FB/LinkedIn/mailing lists etc.. they will not be updated (probably after posting this announcement). Feel free to check out the communities listed above and participate in their social presence/mailing lists/irc channels.
Community meetings: there will be no more MNFI IRC meetings. Again, please join the groups you are interested in and their meetings if available.
Thanks to everyone who has made MeeGo Network Finland such a wonderful community. See you around in one network or other, at some event, on IRC, etc.
"Five-card stud, nothing wild. And the sky's the limit."