This feature is now available to paid members.
As seen on news
We Heard Your Pleas: Comment Editing Is Here!
Ever left a comment and immediately wanted to alter it? Previously, whether it was an embarrassing typo or an incorrect link, once you hit "post comment," your only choice was to either delete it, or leave it for the world to see. Until now.
Paid Members now have the ability to edit comments! Just click on the "edit" button in your comment to make changes. Of course, to be fair to others, only comments that have not yet been replied to may be edited.
A few more details, including screen shots as to what this feature will look like can be found here.