So, by now we've all been on facebook and other social media sites long enough to have spotted all the ... zealots(?). I have found some with psycho political beliefs (hid one, giggle at some others) and now an anti-abortion poster has popped up. What do you do when you come across these people? Does it matter how long you've know the individual? The fervor with which they post about their pet cause? The frequency? Any other thoughts?

I just went off on my best friend from high school. I'm actually quite sad about it (we were seriously close, like sisters), but I can't see that I could have done anything else.