I too am a long timer user and fan of Inkscape .. I'd love to know more about your flow/process of using it to design websites .. got an inclination to share the details?
I think a lot of the power of Inkscape comes from harnessing the abstractions of SVG. I've used it in the past as a container for GUI elements, and as long as you name things properly and maintain a good order of abstraction, using Inkscape to create SVG that can be parsed directly into working code is a thing of joy to behold.
Agreed, I'm in love with Inkscape's support for SVG. Like some of the other posters here, I am fed up with Adobe and it's bloated software. In Adobe's defense, this is likely due to all of the backwards compatibility they need to do.
However, when it comes to using SVGs on the web, Inkscape is clearly the king. Illustrator has a bunch of nice and fancy filters and such, but you try exporting as an SVG for web and you will find a great deal of your design has been lost due to non-svg-compatabile "frills" Illustrator adds.
Not at the moment - but I am preparing something for release shortly, and it'll be mostly focused around the MOAI framework. If you want to tune in to the forums at http://getmoai.com, that'll be where I launch first .. I'm targetting specifically the Hanappe framework for MOAI, if that will give you some clues ..
I think a lot of the power of Inkscape comes from harnessing the abstractions of SVG. I've used it in the past as a container for GUI elements, and as long as you name things properly and maintain a good order of abstraction, using Inkscape to create SVG that can be parsed directly into working code is a thing of joy to behold.