It sucks but unfortunately if your business is successful and it can be cloned it will be cloned: there is 5B people in the world and some these 5B will do it. There will be clones in Russia, in China, in Bulgaria, in Germany, everywhere: depending on how hard it is to replicate/clone.
Unfortunately, it is relatively easy to clone the software part of http://pinterest.com/ so that will be cloned.
It sucks but unfortunately if your business is successful and it can be cloned it will be cloned: there is 5B people in the world and some these 5B will do it. There will be clones in Russia, in China, in Bulgaria, in Germany, everywhere: depending on how hard it is to replicate/clone.
Unfortunately, it is relatively easy to clone the software part of http://pinterest.com/ so that will be cloned.