A long time back, when I was still on Xanga, I picked related posts by hand (yes, I'm a masochist). One of the reasons I moved to blogger was to get
Nrelate wins, hands down. Outbrain just comes up with totally random posts, and a lot of the time it is the same ones. Nrelate also has the option of choosing of how relevant you want the posts to be. Nice.
Do you use a related posts widget in your blog ? Which one do you recommend?