I'm revamping a blog and I've decided to change the Theme. I'm wondering what the most popular layout for a wordpress blog is.

How many sidebars should a blog have? Should sidebars be on the left, right, or both? The Theme I'm replacing has two sidebars on the right. I thought this gives room for more stuff without extending six pages below the fold.

I've read that one sidebar is best, but which side should it be on? I think that I prefer it on the right side.

So, what do you think?