High traffic obviously means there is money to be made, just like when you are a tourist and you get to the mall food court, follow the crowd and it will lead you to the best food. However with more competition there is a need for more creative ways to do things. Like the squidoos, or a review page, (which are becoming less and less creative since everybody is using them).
Take movies for example, there are only 37 original stories everything else is a variation of the same stories.
There are 250 movies being produced every year in hollywood and only 37 original stories.
Good book offline is purple cow by Set Godin.

Hope all is well,

To your success,

David C.