I've long thought that the predominance of a few posters in 'News' isn't to be dealt with by banning them, suspending them or removing their posts but by bringing in more members to the site as a whole, so that their posts only make up a tiny percentages of what's on the site.
AB is run by a firm that makes its money from advertising but it's INCREDIBLY poor at advertising the site itself. We need the site owners to promote it by, for example, running a competition that's only open to members. Such publicity might only cost, say, £100 for a prize, with details of the competition being circulated to both print and online publications (together with those websites set up specifically for quiz fans to use). We'd obviously get many people joining the site solely to enter the competition but, hopefully, we'd also find that some people were staying to ask questions in 'Travel', 'Technology' etc.
If we can get back to the days when there were perhaps a dozen new questions in 'Technology' each day, along with two or three in 'Travel, one or two in 'Law' and a sprinkling of others elsewhere, the presence of a few point-scoring posts from Gulliver, TTT, Hymie, et al in 'News' will have far less impact on the site over all.