Sorry about this abrupt post. I had a similar idea to ostatus project
before, so I was so excited when I discovered Ostatus from Mozilla
Drumbeat.
My idea was basically a personalised data store which allows a user to
control his/her writings online:
http://www.lulalala.com/idea/
I haven't updated the page for a long time, and I just discovered
recently that technologies like PuSH and Salmon are developed.
And I wish ostatus becomes widespread soon and I can gain the power to
control my own writings on the web. Cheers.