Discussion and Mailing Lists
Learn where to get your most complex questions answered by other GIS professionals. Mailing and discussion lists are an invaluable tool in keeping “in the know” in the field of GIS.
GIS Lounge Forum
Great starting place for posting questions, starting debates or sharing tips and tricks about GIS.
GIS Related Discussion Lists
User-sponsored GIS software discussion lists hosted at Directions Magazine.
ESRI User Forums
For expert advice or information on using any of ESRI software products, you can submit your questions to a range of ESRI software User Forums.
Email Discussion Lists
Email based discussion lists. To subscribe send a preliminary email as directed to the email list you are interested in.
FreeGIS
Discussion and news emailing list for the FreeGIS project.
GRASS Developer’s Forum
Email-based discussion list for developers that improve and contribute source code.
MapInfo-L
MapInfo-L is an open forum for the discussion of topics related to MapInfo and desktop mapping issues.
Spatial News Discussion Board
Online discussion board where you can post questions, access news items and discuss issues in GIS. From Spatial News.

Wondering what program is best for running GIS on a MAC. I am a geologist and student in GIS 101. So far I have heard VM Fusion and Parallels are two programs that allow one to Windows-specific programs on a MAC but no info on which one works best or if there are any others out there. Thank you for your time in reply. Martha