I would advise voting NO.
The value of this kind of forum is in the diversity of posts on a wide range of topics. I can tell you honestly that I don't have time to read every post, however I do try to read threads that are relevant to my interests, or those that might be useful in the kinds of tools and techniques I use. On occasion I read Woodcentral turners messageboard, and perhaps Wood Magazine Turners list, WR, WOW, and a few others.... the AAW forum provides a good 'broad spectrum' resource that I enjoy, and consider this as one of the 'perks' of my AAW membership.
Segregating a large number of these posts to a 'sub-group' of this forum would functionally isolate these posts from "the main stream" readers who could ultimately benefit from reading about PM 3520 threads, whether or not they have that lathe (I have a Jet 1642-2HP, but still read the PM threads). If necessary, these PM threads could be retrieved through the use of the search engine if the 3520 purists want to 'auto-isolate' these threads themselves. I think the whole group would lose a great deal of the important diversity if this subforum (or others) were to be created.
For over 10 years I have been a member of another internet forum related to hobbyists growing cacti and other succulent plants (this is related to my botanical research). In the past 5 years or so, a number of smaller "specialist" subgroups have spun-off of the main group "cacti_etc", and today the thread traffic is less than 50% of its former levels, and not nearly as helpful to the whole group (which has over 1,500 subscribers, worldwide). People don't have time to scan multiple forums, as was suggested by another poster to this thread. There is value in crosstalk among specialist groups, the AAW Forum provides this, and as we are all united in the common interest of spinning wood to create interesting forms and having fun doing it, I don't see the need or the value in factionalizing the group by interests centered around a specific tool or a specific method. As was mentioned previously, I don't think we need to take the suggestion to an ad nauseum level, where we start making "The Cyanoacrylate Users Subforum", or the "Vicmarc Chuck Users Subforum". We all benefit from reading the diversity of threads in one main forum - I urge you to vote no if you have not already done so.
Let the search engine do the specialization for those that desire it, and continue on with an excellent resource for woodturners.
See you in Louisville!!
Rob Wallace
Ames, Iowa