Assuming you are in tech, you should probably think differently about this problem. Instead of focusing on whether people could like it or not, do a test to se

Assuming you are in tech, you should probably think differently about this problem. Instead of focusing on whether people could like it or not, do a test to see if people actually want it or not by implementing a very simple and non-committed version (kind of like what Google Labs is to Google's product line). If people like it, you will have your answer. You probably have ideas like this all the time, so make a list and try a few of the more promising ones. But don't put all your eggs in one basket if you don't have to. Also, stop worrying about people stealing your idea. Assuming you are sitting on a pot of gold, it's not about who launches first, but about who gets the right people to use that product first who get the prize.