Not nice for either of them however death threats and abuse plus threat of graphic violent sexual assault if you're a woman is standard practise on Twitter for sure. Did you see the supposed comedy clip posted on this thread? That guys routine is based on repeatedly wishing Clarksons three daughters die. But he's just joking... so thats ok.
MgtH - thing is tho, however you want describe the content thats what made the millions of viewers watch. Including me. So Clarkson hasn't had his contract renewed because he assaulted someone and thats how it had to be but I'm getting slightly pissed off with people saying the show will be better without him. Turn on your TV. There are thousands and thousands of shows without Clarkson. Go and watch one of those instead.