Here me out:

A job searching site but with EXCLUDE filters!

@sassdawe Who would scare away their best customers (in this case, companies with the highest turnover rates)? :)

@buherator I just don't want to see any jobs with Java being one of the listed requirements

@sassdawe lol OK that makes sense :D I thought you want to exclude advertisers.

@buherator I mean, that too but that's a secret feature

@buherator also exclude languages.