Agents and Publishers
AgentQuery Connect–An online social networking community for the publishing industry.
duotrope.com–A searchable database of writers markets and agents, Duotrope can also help you track your submissions.
Entropy–Online journal lists upcoming publication deadlines for many journals, chapbook competitions, etc.
Manuscript WishList–Makes researching agents easier and more accessible.
Poets & Writers Magazine–News about writers contests, grants, agents, and more.
Querytracker–A free trackable database of literary agents and publishers.

Writers Colonies
Artists colonies are great places to Get Work Done. The following artists colonies have given this writer the gift of time and space:
Villa Montalvo, Saratoga, CA
Ragdale, Lake Forest, IL
Yaddo, Saratoga Springs, NY

Alliance of Artist Communities–Database of artists’ colonies/retreats in the U.S. and abroad. You can set your own parameters (such as whether you can take family members).