Internal Displacement Monitoring Centre (IDMC)

http://www.internal-displacement.org/

Established in 1998 by the Norwegian Refugee Council (NRC), the IDP is a leading international body monitoring conflict-induced internal displacement worldwide. Its website has a wealth of full text reports and statistics. Highlights include annual reports which trace general trends, over 50 country profiles, and reports. Many have up to date maps and field reports - for instance see the section on Libya. 
Materials in the site generally date back to 2001 and there are links to related websites. 

For those interested in this topic a key resource remains Forced Migration Online http://www.forcedmigration.org/
coordinated by a team based at the Refugee Studies Centre, Oxford Department of International Development (ODID). Key features include a digital library of full text papers, online podcasts, research guides and more. The site is soon to be redesigned - see their blog for the latest information.