I had the same question as well. My suggestion is to tag your posts properly and their algorithm will pick it up if it starts to trend. With enough users all topics will get covered.

What I have noticed is that all steem topics have the most posts as people are getting used to the platform. Hopefully this will end.

Think about it. Who goes to Reddit to read 100k posts about how Reddit works. I get that in the case of Steemit its a bit different because its so unique.

My hope is that posts move away from the platform topic itself....and into more real content.

Cheers.