There are people like JollyGood who would change their negative into neutral just when a campaign is launched .. just like Jolly changed his feedback for bestchange so maybe a good idea to run a campaign, pay some coins to dogs and get the negative feedback removed. Well done.
No user would rescind his feedback because a website launched a signature campaign, in the case of best change, they were able to clear their websites name and even at that, the red tags still remained, but then their signature campaign went on for months and the users in the campaign were paid smoothly as well the fact that there was no fresh issue against their website, so it's fair to say the website can be trusted and thus almost every user who had initially left a negative, revised it to a positive or neutral. That being said, 1xbit is doing nothing to clear their name from the initial scam accusation, so I'm sure the tags will remain till that happens.