[SeoxyS]

I think the moral of the story is not to get attached to ideas. Ideas in themselves are worth nothing, what matters is the execution. Also, once you're reached success, don't rest on your laurels or someone will out-execute you.

[edwardy20]

So true. It's happened many times; most of the big companies today weren't the first to come up with the idea. I've yet to see someone successfully copy Twitter though :)