Wikis

Wikis are a great way to exchange information. On of my faviorite sites is the wikipedia site, it is useful to a quick reference such a when reading and someone refers to the "rape of the Sabines" a quick look at wikipedia will tell you enough to get the general idea. Wikis are good for keeping up with information and although it would be inadvisable to ever use one as a reference many wikis refer back to where they got their sourses from and in essanse can lead to some great sourse for reasearch.