How do you get rid of people you don't want to talk to?

Don't respond. Duh?

Normally, if I had encouraged it, I would. I hate being mean because I made it seem okay.

Delete and block them. That's what I do. I mean, unless they actually provide useful converstations, you may as well do that so they don't bother you anymore.

It's become that like 1/2 conversation attempts are actually useful. The other ones are downright annoying and yeah. This is the kind of person who, if you don't respond, simply keeps talking. If I don't respond on the first attempt on Skype, I get texted (which I can't easily block people from).

EDIT: Above has the right idea. This is a friend, albeit an annoying one.