A like deserves another.
I observed along the line on this platform that some members are stingy with their likes, they don't like when you comment on their blog or anything, maybe they are not just paying attention though. But it will be of interest for you to know that members have tendencies of coming back to your page or commenting on your items when you constantly like their posts or comments and thus making you to reach out to more people. Pay attention to everything, make use of likes, don't be stingy with it, it does not finish or take anything out of you, it only adds to your progress on WA. Good luck!