So, you should cache hits. If someone asks the same question again five minutes later, then you shouldn't need to look them up again.

Also, it would be nice to show misses -- where the account name hasn't been used.

I have found a few other people out there with the same name, and it would be nice to know what systems I can go to and grab the name I want to use.

Apologies if I misread the license attribution, didn't want to take away from the work you did but also wanted to make sure credit was given.

Cheers