As a frequent StackOverflow user, I've gained enough rep to edit posts and I feel helpful, cleaning up titles, typos, hyperlinking cited references that aren't linked and cleaning up code with high levels of tab indentation so that they are actually readable.
I visit the SuperUser site too, but more like 10% of the time I spend on StackOverflow. I'm miles away from having editing rights on SuperUser.
I would hope that its obvious that I have no intention of defacing superuser (based on my SO rep) thus it would be nice if I could somehow leverage that "trust" on the related sites.
Case in point... I asked this question http://superuser.com/questions/51289/ati-catalyst-setting-to-stretch-xp-start-bar-across-both-displays and Molly provided a good alternative answer with 4 references (but none were linked). Since I had to Google them anyway it would have been easy for me to edit the answer to add the links so that future visitors would benefit from them... but I can't. :-(