I'm a drummer, and I think the only reason for any guitarists to exist is to bring
lots of women to the shows so we drummers can grab at least a few of the beauty- and weight-challenged ones...
But seriously, here's my take on this...
I also "play at" guitar and bass. I mostly play electric, although I do have a couple of acoustic guitars around for my "front-porch pickin'".
I use the "New Posts" link on the front page a lot. Sometimes I'll see an interesting-looking link in a forum
that interests me on the front page and check it out, then wind up poking around the forum looking at other interesting links.
But I only do this when the top-level forum is of interest to me.
Sometimes, poking aroun in the guitars forum, I'll wind up reading an "acoustic" thread,
but only because it was in the "general" guitar forum.
And, unfortunately, an
acoustic guitar forum would probably not attract my interest, which means I might miss an
acoustic guitar thread that might have interested me.
So, I would prefer a consolidated guitar thread.
One other semi-related point...whether or not I read your post greatly depends on the title of the thread. I will probably not read a post titled "Dudes, guess what I saw at Guitar Center today", where I probably would read one titled, "I checked out the new models of Taylor (Martin, Gibson, etc) guitars at GC today...