Just over a year and a half ago, Betsy Lavolette and Susan Pennestri presented a session at CALICO 2012 called Where’s the Peadagogy in Web 2.0? In this presentation (available here), Betsy and Susan defined Web 2.0, couched these technologies in a discussion of Bloom’s taxonomy, and proposed curating an evolving list of useful Web 2.0 tools. Naturally, they did this by crowdsourcing the list via a Web 2.0 tool, the online bookmarking site Diigo.com.
The most amazing part of all of this is that the list is still going strong and now includes over 400 items. To access the list, go to https://groups.diigo.com/group/calicotools. Each item has a brief description has brief notes and several tags such as reading, writing, listening and speaking, each of which can also be used to search for tools within the list. Just click on the tag to view other resources on the list with the same tag.
To participate and contribute to this list, click on the “Join this Group” button and create a free Diigo account if you don’t already have one. Diigo is a lot like Delicious.com, but has a few more features including the ability to highlight and annotate any web document before sharing it. Diigo is a tool worth using on it’s own, but signing up for this group makes the experience even more useful.
ESL Technology.com 
Thanks for posting about this! So glad that you are still checking in once in a while. We are hoping to get more people involved in this, including posting and commenting on resources.
It’s a great resource. I remember joining the group during your presentation and I’ve gotten regular emails every time something gets added ever since. Everyone I’ve pointed to this resource finds something interesting, so I’m happy to help get the word out.