As someone who spends a lot of time on internet forums, I've decided the worst kind of people are the ones who post several (like 6-10 or more) topics in the space of a day or two, all with little or no points for discussion - e.g. they're asking a simple yes/no question (bonus points if they do this repeatedly with multiple topics each asking a different simple question, double bonus points if all of these questions were answered very directly in the board FAQ), or they're asking people for opinions on something nobody really cares about, or asking plot questions (with a request for no spoilers) about something that's obviously coming up in the plot soon (bonus points if they mark said questions as being a plot hole, double bonus points if they predict where the plot is going in multiple different threads, with things that contradict what has already happened in the plot).
I've so far met two people who do this, and it sucks. They aren't breaking any rules, but they drain the discussion away from the board. And it sucks going back to a favorite board and find there are 10+ new threads, all at the top of the board, all with topics like the above. All have 0-2 replies, and you have to keep scrolling down to find the actually interesting threads. And they aren't gonna just go away and disappear, of course. You're going to keep seeing 5-10 new threads with inane questions or boring trivia every day for as long as they're around.