WOT expert and member here:
The Blockland forums has probably been mass-rated by hundreds of reputable voters, and their votes count for many times more than the votes of these losers registering just to badmouth the forums. Usually these mass-ratings don't leave comments, so that explains why you're only seeing bad things on the comments. As long as the forums doesn't start spreading Adware or distributing child research, our WOT rating should be fine.
If you care enough about this to try and stop them from writing false information on the comments, I think you can contact WOT and tell them people are writing misleading comments and they might lock the votes.
EDIT: I flagged most of the comments claiming the forums contains research for 'Misinformation' and provided a link to the forum rules. That should get rid of at least 5-6 misleading reviews.