I have a bit of free time and lots of enthusiasm for software and the web.

I want to make a start-up, to sell kind of product or online service, but I'm having a hard time coming up with business ideas that haven't already been implemented.

For example, I thought of making an e-ordering website for ordering food from restaurants online.

Good thing I typed it into Google, because the market is already full of hundreds of websites doing the same thing and competing heavily.

The same thing has happened with so many other business ideas I've become excited and passionate about - they're all taken.

What's your response to this? Do you agree that all the good ideas seem to be taken? Or do you think there is room for new businesses, and that I'm just not thinking (or looking) hard enough?

Have you ever tried idea after idea, only to find that it was already being done, and you had to move onto something else?