It's pretty obvious why it's come to prominence now, isn't it?
It's from around the same time as all the Savile/Yewtree stuff was going on. The fact that the organisation, with that name, was around for ~10 years goes to show what the culture was like then versus now.
As for HH - I'm sure she's a decent person but some of those allegations do seem to stick. She was the legal officer for four years! The Mail has printed its response to Harman's and Dromey's statements:
http://www.dailymail.co.uk/news/article-2567098/Not-one-hint-remorse-Harriet-Harman-Jack-Dromeys-statements-Mails-replies.html
While I can't stand the Mail - hateful, evil paper - some (not all) of their responses in that article echo my own thoughts. And something that Daily Mirror editor Kevin Maguire said on the R4 Today programme this morning is also true - if this had been a high ranking Tory politician, the Mail would probably still be acting in a very similar way.