I guess I'm going to kind of contradict what a few people said here. I don't think you should give up, but you should also not stay too devoted to one particular idea. If your forum isn't doing too well, don't be afraid to try a different idea, if you have one. If you want to create a successful forum, you have to find the right balance. You need to know when to give up on an idea, but you also need to stick to a good idea once you find it, and make it a success. I guess the best advice I have for you is this: make a forum which you can be interested in, and stick with it as long as you're having fun. If the forum becomes a chore, or you get tired of it, then start a new one with a new, fresh idea. Repeat until you find something that sticks. 🙂