I'm not sure how many campaigns are even left these days, but for a while it seemed like they were in danger of dying off--so it doesn't surprise me that people would be applying for the Livecoin campaign regardless of how shady they've acted in the past.  There are tons of members on the forum who are desperate to get into any signature campaign they can, and they're willing to take a chance that they'll get scammed.  It's happened before.

I'm not a big fan of negging campaign participants unless what they're promoting has been proven beyond a reasonable doubt to be a scam and they continue in the campaign.  Having said that, I'm not sure if I ever knew what the story was with Livecoin--I'll have to do some reading about it.  It does ring a bell, but I've been preoccupied with a lot of RL stuff for the past 2 months and I'm sure I've forgotten about their misdeeds.  If they truly have scammed and there's solid evidence for it, and there's a good chance people are going to get scammed as a result of campaign participants advertising for them, then those participants probably should be given a chance to drop out before any DT members give them negative trust.

*Edit*, just read these posts which kind of support my assertion that some bounty hunters don't care about the risk of getting scammed.  They think of it as akin to playing the lottery: