Free APIs. Aha... Not sure what that means exactly, but there ARE Wikipedia pages for most books, I think. If you want to look into it, I've put all my book reviews into this post collection. (And I realize, some posts review more than just one book. I can totally update it, if that's the issue.) Take One Flew Over the Cuckoo's Nest for example: Here's my post and the corresponding Wikipedia article.

But I feel that is not really the issue at all. See, once all my posts have been scanned once, I can't seem to find a way to redo it. I was even thinking removing the one about Das Boot, so I can re-scan and fix the error, but I have no idea how or where I did the scan. It's almost like if it's an automatic one time only option.