Yes, if someone is racist/sexist/ignorant in general. I also report people who I see are obsessed with hating my faves. If I see that you're one of those fools who spends more time hating my faves than stanning for your own faves, I'll keep an eye on you make your point tally keep rising and rising.
Yes, I usually only report Queen Rih shade or comments made by people who don't like Queen Rih.
I used to do it much much more; I considered it an art getting people banned, but now I only do it like once every few days.