If it was me I would have taken screenshots of all the hate I received and posted it. I've have friends who have gotten both anonymous and non anonymous hate on Tumblr and they've always taken screenshots of it.
That would depend, I think.
Archiving screenshots as a safeguard can certainly be a good idea, but publicizing is actually not usually a good idea.
One of the first things a police officer will tell you, if you've received a credible threat or are being criminally harassed, is not to publicize the event. This is for several reasons: It encourages copycat behaviour, it creates the notion that people can engage in the behaviour and get away with it, in many cases it generates the exact attention that the person doing the harassment is hoping to create, and it makes it more difficult for law enforcement to investigate and ultimately intervene in the harassment.
Edit: For similar reasons, that is why the moderators on BSN encourage people to report issues privately, rather than engage the individuals, or make pubic threads about it.