<professor>Good news, everybody!</professor>
It appears that the infamous segfault bug in Karmic has been vanquished, and BloGTK 2.0 no longer tends to fall down and go boom when editing posts. Apparently the WebKit view does NOT want to die, and will decide to take down the entire app if you try. This behavior is more than a little strange, but thankfully there’s a workaround that appears to kill the bug.
The trunk branch on Launchpad has the fix. Hopefully this will fix some other bugs on other platforms.
At this stage, once the fix is confirmed not to cause massive breakage, there will be a point release (2.0.1) with the fix.
From here on out, the next step will be squashing additional bugs, making sure that i18n will work out, and then planning for some new features.
As always, please keep sending bug reports and ideas my way.