Here’s one tip for growing your blog audience: solid post tagging to get your posts out there. “If they can’t find you, they can’t like you.”
A lot of times, bloggers will only do 3-5 tags per post. For a post on the wage gap, they may tag “feminism” and “wage gap.” This means that if their post gets some likes and shares, they will show up as a popular post for those two words/phrases.
If I’m covering that topic, I will use tags including: feminism, feminist, wage gap, pay gap, gender wage gap, gender inequality, gender equality, workplace discrimination, etc. This way if the post gets activity, it will show up for as many as 10-20 words/phrases, allowing WAY more discovery for the post and blog.
The words need to be appropriate and relevant, don’t just use words for the sake of using them, but thoroughness definitely helps!
To get tag ideas, you should look at what other people are tagging when they cover similar topics. Tumblr even shows related terms when you do a topic search.
Hope that helps! Good luck with your blog!