Our amount of actions (transactions) in Steemit is relatively correlated with the amount of Steem power that we have. Our stake (in the form of Steem power) is the determinant of how much can we do in the blockchain. 

Being a "Freemium" blockchain where basically it is a "Free" blockchain where there will be no cost if you perform transactions like upvote, comment, post, resteem, vote for witnesses or even perform account transfers. But technically there is a "cost" behind perform such actions. With the current hardfork (HF20), our actions is computed by three factors :

- State memory

- History size

- CPU (mega) cycles

Which is in conclusion that having low steem power will affect the number of questions you ask and number of answers you can provide on musing. 

Our answers (and posting) on questions will serve as "comments" on Musing Threads or it can serve as a blog post if you checked mark "Post as a blog".