Not only is it an interesting idea, it's not new. The story was posted to slashdot and readers offered websites that solicit ideas from anybody. ShouldExist doesn't seem to have a lot. Why Not? has much more, but I could only see the list by way of Google's cache (if that link doesn't work search google for "whynot" and then click on the "Cached" link on the first result).
Finally, more outrageous ideas seem to migrate to Half Bakery. Start with the ten highest rated suggestions for a sampling. "Film Noir Home" is my favorite of those.