It's encrypted. No way for any of us to know - the urls referenced could indeed be decoded to valid URL's, or they could decode to ID's or keys for the server to look up from its database. So, unless the developer sucks, we really oughtn't be able to find out.

Maybe you could visit a couple, so that we can see what the decoded text is, and try to determine if it's something thats' encoded or being looked up.