Honestly, I usually don't pay attention to the comments like "followed, please upvote and follow me" as the same way I do on other social media. Here I usually upvote and follow just what/who I like. If someone ask me to follow him/herself, sorry, but if I don't like what he/she wrote I don't follow.
Sure, at the same time I appreciate every comments even if they are just a "nice post/awesome pics/etc" because I know that there are more people (as me ^^) who are not native English and maybe they have some difficult to find the right words to espress their toughts ^^