Don't worry about there being similar concepts. You never know if something like this will pursued beyond a Labs project. The main thing to realize is that if y

Don't worry about there being similar concepts. You never know if something like this will pursued beyond a Labs project. The main thing to realize is that if you consistently work on your idea, it does not matter if someone else has a similar product. Being a smaller, more agile developer, you can continue to innovate much faster. This applies to your ideas being stolen too. Sure, anybody can copy what you have made. But remember, nobody can copy what you haven't even thought of yet. So just keep thinking of cool new things your users can benefit from and make them so you stay ahead of the curve.