I think you are absolutely right the most effective strategy to be noticed in steemit is to comment on publications, since it is the way in which both the authors and their readers see our point of view and some will be identified with us, and in that way we will get new friends
With respect to the accounts with little SP, well I am from Venezuela and in our country practically nobody has money to invest in SP, we are in a serious economic crisis, then our votes are worth 0.01 to 0.05 the great majority, for so many publications that we do My countrymen and I, we can not cope by voting our post as there are many posts to vote and little SP to vote, but we must not falter, we have to move forward and make new friends that is the true function of a social network
Thanks for reading me.
regards