These cutesy little teaser posts, such as "great idea" or somesuch are all over Yahoo boards. When you click on the post it's pimping some other site where you can "learn to make millions with this stock picking program" or somesuch.
Thankfully, most of these are ignored. But they do clutter up these posts and add noise and garbage to the board. Best way to get even is NEVER EVER click on their links or go to the URLs they are pimping. My 2 cents.