FaceinHOLE is a photo manipulation app that allows users to upload their photos and apply them to different backdrops.

Remember those cut out characters you always see at amusement parks, where you can put your face in the hole and have your picture taken? Good times, hem?

Well, FACEinHOLE.com brings those great moments to web 2.0 and allows people to upload faces and apply them to different backdrops. A webcam can also be used.

But FACEinHOLE.com is not only a great, funny site but a major provider of viral marketing tools to companies and individuals.

Can you imagine all your users being able to upload their pic and to interact with your site? Making custom postcards or literally being a part of your last advertising campaign?