I've been doing webdesign for a couple of years now and I really enjoy designing the initial layout for my pages. That being said, I've also had some fun projects were I created "look a-likes" of popular sites such as Facebook and a few others.
Assuming I started my own webdesign template store, would I be able to sell these 'mimics'? How much different from a site does it have to be? In these mimics, by the way, I never use images from their site, I always recreate them myself from scratch.