That’s “Yet Another New Theme”😀
I like this one. No obvious disadvantages as of now. Three columns with categories and blogroll on the top of the two, search box, left alignment and colour choices which allowed me to choose the one you are seeing now,
But there seems to be some problem in the middle column. After the first post, there is lot of blank space. It looks particularly bad in IE and may sometimes give an impression that there is only one post on the page. I have submitted the feedback. Hopefully they will fix it.