Um, I'd like to team up with TSO here.
I think what Ghaleon meant is most members(well, at least himself, me and TSO, as far as this thread shows) don't want to have to *keep track* of one thread or another to know it's contents.
Megathreads, in the sense of threads with a broadass subject regardless of activity, make it hard for someone to read or talk about something within a subject without reading/talking about/having a great interest on everything else on that subject.
In the specific case of news, it's hard for someone to see different news events if they're cluttered up in one thread.
There's no indexing to make it easy to find something you like, and it's too broad a subject to just jump in and read whatever's latest.
Let's say maybe I want to read about some interesting event that happened in the world this month.
I go there in the news thread, the latest news post doesn't interest me. Okay so I'll read the one before that. Welp, not quite what I want to read either. Kay, I'll read the next on(ry
see where I'm going here? There's no quick way to go around the posts until you find what you want, the only way is to read every single one in order until you do. That could take 5 minutes and two posts, or one hour and 30 pages.
That's what puts me off completely about the news thread, and general mega-threads, with the exception of the 3 chat threads in CPMC, because they're well, chat threads.
I haven't even been in the anime thread anymore lately, come to think of it.
And as TSO put it, for some reason people gravitate to mega threads, and the last effort to split the anime one(which was a relief to me, it was nice to be able to talk about one series without it being cut by another) also didn't last long.
e: Sorry Squid, didn't notice you :3