People need to tag topics with the proper tags. Steemit is top because most people posting here just tag with #Steemit even when not appropriate. Just because your posting on Steemit doesn't mean it belongs in #Steemit.

The second part of the problem is the curation system. People are going to tend to vote where they see the money went last time. Vote for content not just because it's trending.

The site does need better tagging features and better ways to filter/view topics. I hope this is coming in the near future.