How many people do you have on your friends list? Have you ever rejected anyone's request to be your friend? Same for black lists, what kind of people populate your blist?
I'm semi-selective in the people I put on my friends list. I've gotten requests from people whose names I can hardly place and so I just reject those. The people have (at the very least) got to be memorable if I'm going to befriend them. I have about 70 people on both Asura and Pandemonium on my list and only about half of those people I still talk to on a regular basis.
I only have 5 people on my blist. One guy who kicked me out of a party for absolutely no reason and no /tell. Another for calling my mule a "fag" just because he was a Galka named Prettyinpink and the rest for idiotic spamming.
I just added a person a few days ago who would NOT stop doing emotes over and over and over again. Hello, welcome to my Blist!