This is a phenomenal site from the 3M company. It is updated regularly and includes information on how to run better meetings through tools and resources. It's a good site including a lot of information about the industry and the association. The is the home page of the International Association of Conference Centers. It's a great site where you can submit Requests for Proposals.
Planners can sign up to receive industry news.
This site is a fantastic event management tool. Register for their free services to manage your guest list, RSVPs and photo album on-line.