Burchill is one of the original 'controversialists', especially for her shit regular comments about trans people in the Guardian many years ago. Then she seemed to lose popularity and no one took a blind bit of notice of her increasingly 'look at me look at me' articles. However, in the current climate of Spiked, etc. that's found favour again.
I remember seeing what she posted towards Sarkar at the time and it was grim. Whether you like Sarkar or not (I don't mind her personally), she's on the receiving end of some seriously awful and at times obsessive racist and misogynist shit.