Trees In Trust
Trees In Trust was set up so that you can quickly and easily secure a piece of woodland as a gift, as a memorial or to balance your CO2 production. You don't own the woodland, rather it is held in your name forever by a not-for-profit charitable land trust. Your name is attached to the deeds for the property and the woodland is protected in perpetuity. Trees In Trust works closely with these land trusts and is used by them to raise funds to secure and preserve woodland for the benefit of wildlife, for the environment and for future generations.
Web Site: http://www.treesintrust.com?ac=jmwcfbzxwnsadcsksgiygb
MapInfo-L

MapInfo-L is an open forum for the discussion of topics related to MapInfo and desktop mapping issues. Subscriptions are free and open to the public as an unmoderated mailing list. Topics for discussion cover anything related to MapInfo from how to do something, to bugs, workarounds, third party products, and even general topics about the GIS and mapping industry.

Web Site: http://lists.directionsmag.com/discussion/list_info.php?f=7
The GeoCommunity
The GeoCommunity™ is THE place for the Geographic Information Systems (GIS), CAD, Mapping, and Location-Based industry professionals, enthusiasts, and students to gather.
Web Site: http://www.geocomm.com
Directions Magazine
Your GIS news source: GIS news, articles, maps, data, and tools.
Web Site: http://www.directionsmag.com
GeoPlace.Com
The authoritative resource for spatial information.
Web Site: http://www.geoplace.com
Open GIS Consortium
The Open GIS Consortium Inc. or OGC groups more than 250 commercial, governmental, nonprofit and research organisations worldwide, encouraging and prescribing standards for GIS data processing and exchange.
Web Site: http://www.openGIS.org