The title of this topic has been changed to "Should the time to edit posts be reduced?"
At one point in time people were able to edit their posts without any time limit. This led to the abuse of the edit facility that you mention.
I believe the editing window on another forum is only 10 minutes, and it doesn't seem to cause too many problems.
Each website has it's own ways of doing things, what works for one community of people may not work for everybody. The balance that we try and strike is to give a reasonable bit of flexibility for people to carry out edits. We all make blunders and go back to a post now and again. We quite often read a spelling mistake only after we walk away from a post and then read it again.
Trystan - is it possible to have different limits on different boards?
No unfortunately the edit time is set for the whole site, not for different boards.
2. All edits to be differentiated from the original message, with time of editing shown
3. Notifications to include edits as well as replies
There are operational reasons as to why this cannot be done.
A time limit of 24 hours was put on the post editing option. This was seen as a balance between allowing people sufficient time to edit their post, and reducing the likelihood of the abuses of editing a post. In general it has worked well.
There are a couple of workarounds, although not ideal.
If a post is quoted in a reply then if the original poster does change their post then it will become quite apparent (as the quoted text would remain in your reply.)
If a person is seen to abuse the edit facility then use the "Report to Moderator" function. The matter can then be looked into, where we can have a quiet word with them. If this is not forthcoming then then there is there are options that we can take, including having the edit facility removed from individuals on a case by case basis.
Trystan