I like this idea found on Boing Boing:
Whole Lotta Nothing has sent out a lazyweb request for a blogging plug-in that would allow a blogger's close friends to correct typos in his or her posts. I sure could use something like this.
This would be great for friends of mine like Koba who has a horrible spelling problem. ;) I'm constantly sending him emails of his typoz. Then again, I'd love to let him correct my typos, like the one at the end of the previous sentence.