Heaps!
If they send something dirty as an opening line they get blocked immediately, cos it's only ok with invitation in my book
Also those people who seem to mass mail, you get the mail and it says nothing about you so you know they never actually read anything about you...usually with the opening line ''Dear Friend'' - Blocked. Incidently there seem to be a lot of these guys from India/asia in general?
People you politely refuse who just don't seem to get the message also get blocked...I can't be bothered with spam.
Man I am a mega bitch lookin back on this...ah...but I don't really care anymore