Ankers Maybe you should plough your way through the whole judgement, although I warn you it's boring.
The judge took into account that Jack Monroe is sometimes controversial and uses bad language herself. He also recognised that she didn't respond in the best way to the Tweets. He said the award would have been higher,if she'd responded better.
Nevertheless, she has quite a high profile and has a reputation to uphold. Katie Hopkins implied that she had approved something which most people would find shocking. The way the Tweet was written was deliberately confrontational. The Tweet was on Hopkins' home page for long enough (at least two hours) for other people to read it and believe it. Some of these people then sent abusive Tweets to Monroe, which caused her distress. The graffiti on the war memorial had already made headline news, so people were feeling outraged about it.
When Hopkins realised her mistake, she deleted the Tweet, but refused to apologise or retract the comment. After Monroe demanded an apology, Hopkins then made the 'social anthrax' comment. The judge said that if Hopkins had retracted the comment at that point and not made the further Tweet, there might not have been a case to answer. It was because she couldn't admit that she'd been wrong (a bit like Trump, although the judge didn't say that) that she lost the case. She didn't turn up for the hearing, so couldn't be cross-examined.
Most of us on GN use usernames, so our reputation (if we have one) can't be defamed. As the judge acknowledged, Hopkins herself cultivates an impression that she's an outspoken 'rentagob' and she makes money from that image, so it would be difficult to know what kind of reputation she has to be defamed. It would be different if people were to accuse her of lying about her epilepsy or some other personal detail. Any comments on here probably confirm Hopkins' own self-created image.