This open content travel site is excellent ! It has lots of information, about almost anywhere in the world. Seeing the amounts of data, and the number of users, I think it already has the critical mass to make it successful.
The content is uploaded by travelers. It seems that business owners didn’t conquer it, so there is no hidden marketing content. You can build a map of the countries you have visited, and it will count them for you. I currently have only 23.
You can see my map and my contributions to the site here.