Imagini, which first shot up to the top ranks of Digg two weeks ago, works by using a personality test based on a series of cool images to then match you to other people or allow you to find cool gifts for your friends. According to their homepage, they were able to sign up 750,000 people from around the world in 2 weeks (!). They also managed to enter the top 5 Alexa Movers & Shakers just recently which bodes extremely well for the company. The UI and the images are impressive. Just try it...