Don't do it for free, though! You can extort the clueless charge $0.50 - $1 for every single address someone looks up! That's what AMLBot charges for their provably incorrect guesswork, after all.

Here's the thing, though: Wasabi don't care. They are not doing this out of some misguided attempt to stop criminals or anything like that. They are doing it simply because they want to protect their income at the expense of their users.