ArchNet: http://archnet.asu.edu/
Society for American Archaeology: http://www.saa.org/
Register of Professional Archaeologists: http://www.rpanet.org/
Archaeology Channel: http://www.archaeologychannel.org/

Cultural Anthropology Links

AnthroNet: http://www.anthro.net/
American Anthropological Association: http://www.aaanet.org/

Biological Anthropology Links

Paleoanthropology.org: http://www.paleoanthropology.org/
Leaky Foundation: http://www.leakeyfoundation.org/
Association of Physical Anthropologists: http://physanth.org/ 
Institute for Human Origins: http://www.asu.edu/clas/iho/