My original post about Technorati's WTF application was shallow. Clearly I didn't really get a lot of what was going on. With Natalie's help, I've now explored a bit deeper and it does look like this could actually be quite a significant feature. The important thing to note about the system is that WTF blurbs are served in search results.
For example, if you search for ICWSM on Technorati, you will get Natalie's blurb at the head of the results list. In the screen shot below, you can see the results above Danah Boyd's post about her invited talk at the conference.