I saw this at Carver's blog. This was started by Monday Morning Power. If you are interested in participating, visit Monday Morning Power and leave a comment there, after following the instructions, which are simple and so are the rules, some of which are reproduced below. Pls find the whole text here .You do not have to be tagged to play along.
1. Copy the master list
2. Add your site(s) to the list. Just be sure to post the "Big Bang" at each site you add.
3. Tag or don’t tag, your choice, however, the more tags you create the longer the list will grow.
4. Leave your blog’s name and url in a comment here and you will be added to the master list. (I am nr. 745!)