Not Very Often
I rarely need to use it, but if I have to then I will. For the most part, if someone that I'm talking to on Ep is getting on my nerves and won't leave me alone, then it will be time for the block button because I'm not going to put up with them being pests anymore. I've only had to do that twice so far. Of course I get this feeling that both of the people I blocked were the same person pretending to be two different people just to mess with my head. I blocked them both at the same time.