Irakli has a plugin here: http://github.com/downloads/Gozala/github/gist-v0.1.1.zip installing that results in adding a plugin called gist-v0.1.1, which is not valid or useful.
Not important for 0.8, and possibly subject to change with the coming web-based plugin gallery (which is nearly ready as I type this).
ACETRANSITION The Skywriter project has merged with Ajax.org's Ace project (the full server part of which is their Cloud9 IDE project). Background on the change is here: http://mozillalabs.com/skywriter/2011/01/18/mozilla-skywriter-has-been-merged-into-ace/ The bugs in the Skywriter product are not necessarily relevant for Ace and quite a bit of code has changed. For that reason, I'm closing all of these bugs. Problems that you have with Ace should be filed in the Ace issue tracker at GitHub: https://github.com/ajaxorg/ace/issues