I think a big factor here is "careful who you follow". In general your feed (made from people you follow) should be about all you need to "hunt" to find the content you like. Unfortunately, we can get caught up in earning curation rewards more than evaluating content and end up with some spammers in there... solution: unfollow (and mute in my book)! Solved!

Enough people doing this and they'll get no traction. Another way to help fight them is to re-steem the GOOD posts. Make sure they keep getting refreshed in the listings and find their way to the hot/trending sections and nice and high on everyone's feeds.

We literally starve the spammers of attention until they wither and die like a weed beneath a thick shrub.