But, err, crazy paranoia aside, yay for nice people who return wallets!

LOL!

Now you're got me being paranoid, an aftermarket might make more sense. Pickpockets who just want cash pass on the rest of the wallet to a fence for a nominal fee, where it can be bought by identity thief, someone who wants a date, etc...

Now I think of it, that seems like a really horribly plausible idea...