How to block FaceTime calls and iMessages on the Mac

[iMore.com]

If you're being stalked, spammed, pranked, or otherwise abused over iMessage or FaceTime, you can block that contact and prevent them from bothering you ever again, even on your Mac. It's simple, it's easy, and it's oh-so-gratifying. If there's an especially annoying someone you've been waiting to ignore, here's how to do it!

Full story from the iMore Blog...