Go2Web20 is a Web 2.0 tool directory. It is organized by tags, common terms given to describe the site. All one needs to do is click on the "tags" drop down menu. A list of tags, clouded for conviencence, will pop up. Click on the tag that bests describes the tool you are looking for. A list of icons will drop down of all the sites that have been tagged with that choice. Click on any icon and check out the site.
There is a lot of sites here and it may look intimidating to some. One does not need to look at everything. It is like a phonebook. Check out the sites you are looking for.