I haven't really looked at any forums for Inkscape, so perhaps take this with a grain of salt.
I subscribed to this mailing list once before and ended up cancelling the subscription becasue there wasn't really all that much discussion of Inkscape with regard to Art or technique. What there was was a lot of technical and/or developer related stuff, such as why can't I export eps/pdf or whatever.
The list is still pretty much the same, tho I have picked up a few useful things. I can see the need for one or two centralized forums (and yes, I think more could be divisive), something along the lines of what GimpTalk is for Gimp, a place with multiple areas, some technically related and some that are more for the artistic side of things, and, of course, a tutorial area. I haven't really seen a good centralized source of Inkscape tutorials, but maybe I haven't looked in the right place.
I like to use Inkscape in conjunction with both Gimp and Blender. Inkscapes interface for dealing with paths is much superior to that of Gimp, so often I make a path in Inkscape and then import it into Gimp for further manipulation...perhaps some of the stuff I do could be done all in Inkscape (but I lack the knowlege/skill to do it)
http://img181.imageshack.us/img181/4962/darktiaramz1.jpg
The above link is to something that was done with the approach mentioned.
Inkscape into Blender is also very intersting. I was able to make a 3D nautilus shell in Blender by importing a spiral made in Inkscape into Blender and then applying a bevel object and a taper object to it.
To me, this mailing list isn't as good as a forum would be...you can't post in-line images, and there doesn't seem to be as much discussion about "how-to" type stuff, except as it relates to the more technical aspects of the program from a development standpoint, and I think that is why there is so much talk of people wanting to start a forum, there is a lack of, for want of a better term..."artistic fellowship".
Again, perhaps there already exists such a community somewhere for Inkscape, but I haven't run across it yet.
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