Outlook, brilliant responses too.
Hit man :o
It's nowhere near the scale of your responses, but I finally blocked a male friend who I'd known from work years ago, just before Christmas.
He'd say things that were almost inappropriate, things that made me feel uncomfortable. But there didn't seem to be enough to delete from Facebook.
Then one final message came. I read it, and thought "this person adds nothing to my life and occasionally raises my hackles, what would MN do?"
So I deleted him.
Glancing at other messages yesterday I noticed I have repeated message requests from him. I haven't read them.
It felt so good to close that door and accept my feelings.
No where near as awesome as everyone else's responses, but I've always been caught on my need to be polite. It was nice not to be.