New Web 2.0 Tools

Which Web 2.0 tools did you explore and how might they be used in the classroom to promote communication and/or reflection?


I remembered a workshop I went to last month and a web site suggested there. This site 
a  site for finding web 2.0 tools. 

One of the most useful thing about this site is that one of the ways you can sort is to find free applications. In the past I have had issues with tools that were once free being changed to fee based applications.