That's one thing I never really thought about but today I hit it. I know others on here have blogs at Blogger so I thought I'd let you know that there's a limit of 2000 labels. I had the fun of going through posts to remove a few labels. Apparently I've been label happy so be careful on what you label. So instead of having a label for the book title you might decide to just use the author instead. I'm not sure if I've got so many labels because I also do a few paid posts over there along with the book post and TV posts.