Well how do you know that Facebook and Google doesn't have what you made? Companies keep things secret until they properly develop it maybe these companies are already up to it.

Also there is nothing called super awesome idea that no one hasn't come across at least someone somewhere must have had the idea you had just that they never pushed it to production or made it and never sold it or at least tried to make it.

I guess the best way is to share the idea with the community not in detail in how you do it but an idea in what you made so other can talk and comment on it. Only after that you will realize it is a grand idea that you think it is.

But on the other hand there are great inventions that went un noticed for a long time before getting traction. Look no further the mp3 Technology that we used today was not used because the bad mp2 technology was backed by big companies. Only after a decade or so with slow traction mp3 got popular. The developers gave up the idea of mp3 and even decided to stop developing it.

This is from a book called "How Music Got Free". I suggest you guys read it :)