My main concern is clutter. I see Mining as being a place for people to go and actively search for answers to their mining problems, or find information about mining hardware, and my first though is that pool announcements aren't one of those things that would be too difficult to find in any section, so by having them in announcements, its doesn't clutter up slightly more urgent matters.
If Announcements consisted of Coin Announcements and Pool Announcements, the first and second pages should contain all of the current hip and happening coins, and their respective pools.
I'm leaning slightly toward Announcements myself, but of course I value your opinions.
*Edit*
I like the idea actually. Have the official announcement thread for important messages from the devs, and then a general discussion thread for regular happenings. Noted
Or heck, each time the admin posts an announcement to the coins' announcement there they could also create a discussion thread for discussing that specific announcement?
-MarkM-
*Edit again* On second thought, that might lead up to too many threads being created. I think the current general discussion within the coin announcement thread works fine, the Coin Developer can always edit the OP so all important information is consolidated on that post.