Also check out the official forums for the MTGplay community:
http://mtgplay.2.forumer.com/
Thanks to some devoted users, there are some new websites around to help advertise MTGplay and provide instructions and support for using it.
Check out these websites for information relating to MTGplay and its community:
http://www.mtgplay.com
http://www.nic.fi/~fuerte/mtgplay.htm
http://www.geocities.com/mtgieclub/