The more i re-read my old posts, the more i feel the need for edit button to have no time limit on posts, or alternatively, there could be a special editing scheme for older posts. You are given say 2 or 3 'chances' to edit old posts per month, and they can't acrue past one month's value.

That would be pretty awesome, but I don't know how feasable that would be... Either way, just throwing up ideas.