Great post on how you accomplished live caching. I'm (as usual) a bit late running in to the same issue with my online data. I find that a lot of detail about my actions are stored in various places on the web. I really would like to have a good application that lets me retrieve all this data about me and store it in a searchable way, perhaps a database. I'm going to try a simulare approach like you did via a blogging engine. I might even create a world readable life stream.
PS. this is my first cocomment comment so an additional feed needs to be stored :)
This is a very impressive list I think I'll start using some of these in the future. But i notice that you seem to be missing my favorite http://www.tempinbox.com.
I really like the Technorati overhaul, and I'm not even a power user. I think the new upgrade of the pages is a big help the the majority of the people using Technorati.