CoinsSource is hard at work trying to address this issue head on. As long as the community keeps supporting these kinds of coins, people will continue to put their garbage out. If the community, and developers come together to create solutions to solve this issue, it will fall off.

We're working on a Trust Index that looks to address this issue from a developer side. Please see how we plan to do this and support us if you're interested.

http://www.coinssource.com/trust/