I hope I don't come across as negative here, but I hate lists like this. Peopel are always raining on each others' ideas "Oh, what, you're going to make a myspace clone? Bahahahaha." (facebook) "Oh, what, you're going to make a facebook clone? Bahahahaha." (twitter) "Oh, what, you're going to make another dating website? Bahahahaha." (Okcupid, plentyoffish) "Oh, what, you're going to make another social bookmarking w…
Life is very, very short. Given the choice between not building anything at all and building a "Craigslist killer" that no one will use, I absolutely agree - go for it! Given the choice between building a cliche project and something a bit more off the beaten path - you may as well put a few extra days of thought into a project before you start, and come up with something unique (as long as you don't spend all your t…
The problem with most Craigslist competitors is that they are designed for mainstream Craigslist users. This indicates that the people doing them usually don't have the level of thoughtfulness that's needed to succeed. And while it's certainly possible to listen to your fans and make changes as you go, it's too hard to succeed this way against an already entrenched competitor unless you have at least a little bit of an ideological advantage compared to the existing platform. For example, if you want to start yet another fitness company based on game mechanics but you haven't read Punished By Rewards then you are probably pretty screwed.