When I use Google's OAuth system to login to a website (e.g. a StackExchange site), I see it use a string similar to the following:
Does this string contain any personal identifiable information? For example, is my email address encoded in this string? How about the file it links to? Basically I'm wondering if there is any way that someone can know my email address if they have this string.
I realize that when you authorize a site, you send them your email address. That's not what I'm asking about. I'm only concerned about this URL specifically and what information, if any, can be deduced by it.