<p>I'm considering developing a website similar to stackoverflow, but the answers may also consist of drawings (schematics, in this case).  I want to have an area in the answer form where they can make this schematic without requiring special plugins, etc.  </p>

<ol>
<li>Are we to the point where SVG has or should have critical mass soon (1-2 years) such that designing a website where script-run SVG as a primary feature is reasonable (ie, requiring Firefox or another SVG/AJAX compliant browser)?</li>
<li>What are some good resources for learning cross platform SVG scripting (likely in javascript)?</li>
</ol>

<p>-Adam Davis</p>

1/ probably never - if IE wanted to add it, then I would have though it would have done so by now; but there are workarounds using
SilverLight
and
Gecko
to provide rendering. On the other hand, there are cross-browser graphics APIs available. I've done largish front ends using XULRunner and SVG, but nothing on the web which had to cater for IE.
2/ The two I referred to most often were the
SVG pages on mozilla.org
and this
SVG DOM reference
. All of my SVG links are here on
delicious
There's one existing editor at
http://www.bpel4chor.org/editor/
; also if all you want is schematics where all arcs are on a grid, you can do that quite well using divs and images without SVG. Or you could just go the
lo-fi route