it should have probably also found ISBN numbers as when i did a search for Achtung Panzer i had all language versions and releases mixed in results. So it might be fine for books with single release but books that have multiple release and versions and on top of that pictures can be less fun to check :) Maybe You should also cache results for like a 1-3 days or something.
Great suggestions thanks. I'm working on a fix for ISBN numbers that will be up within a day. Caching is not something I've started on yet but it's a great idea I'll start looking into it shortly.
