Cool that you're genuinely interested in the use of it, as well as fixing it's implementation in the app! Developers are human, yay!
I like seeing the comments for tracks I love or new music, and seeing what some of the other listeners listen for ideas! It gives you a compatibility rating, so if I see someone comment on a new song I like, I can see how high we match. Then, it gives me an idea as to whether I will listen to the other stuff they enjoy!