Bug Sniff is a crowdtesting application. Testers will report bugs they find on your website.
This is awesome when you are about to launch a new service or after a big release.
Actual people will go and search for bugs on your website. They get paid if they are the first to find a specific bug. You can export the bugs into your own bug tracking system.
For $USD 20, people will try to find up to 20 bugs.