I would like to make a suggestion.

Would it be possible to place a time limit for editing posts. I participate on another (computer help) site where the limit is one hour.

It has two advantages - it encourages members to be more careful with, and to check, their comments, and prevents discussions being disrupted and often made senseless by mischievous posters changing the words and often the meaning of what they have written, which can make subsequent posts in response useless and unable to be understood.
As there is no public indication that a post has been edited (unless the poster says so) the changing of them can often make following comments to be taken out of context and be offensive to the wrong person.

The downside would be that spelling errors or genuine mistakes would have to remain unless noticed within that time - I often see and correct mistakes I have made weeks, sometimes months later.
However, that would be a small price to pay to prevent otherwise useful conversations in the discussion boards being totally wrecked by anyone deliberately changing what they said, causing chaos and upset.

Speaking as a dyslexic and grammatical bumpkin, I would say no. I've seen the reason why this was suggested in another thread, but these events are few and far between, my typing mistakes are not.

'Events' such as the one referred to brings the matter to attention but the changing of posts (I believe) happens quite frequently. Editing and deleting in image narratives does no harm, unlike those in discussions.
I don't think 'speeling erors' or grammatical ones cause much distress to anyone anyway :)
Many of my typing mistakes are noticed when I read a cred comment - then I go and correct it, but as yet no-one has ever accused me of disgustingly upsetting spelling offences.
:)

Something that just occurred to me (I checked to make sure): If you make a complaint about a comment and it is edited later, the original comment is still recorded along with the complaint.

May not solve the issue in every case but it's handy to know.

Very handy to know thank you !