Is there already a hack that will "bump" a topic to the top if there is an edit to any of the posts by any user? If not, is it possible?

This would be very nice! I was suprised that vBulletin didn't already do this.

In editpost.php, add this:
right before this:
Should work. :)

Goes to test it out :D

Works like a dream. :D Thank you FireFly. :)

No problem. :)

The only downside to it is that it doesn't adjust the "last posted by" on the index, but that is actually a very minor thing that I can live without.

Yeah, that's how it works. :)
You could in theory add another field to the thread table, let's say "lastactivity" and order everything by it, but it would be such a headache... :)

Don't want any of those. I just wanted to let people know its behavior. :)

vBulletin used to do this by default but I changed it as users found it fun to bump posts just be editing them.

I realize that possibility and with this addition to the code, have the ability to take away the feature if it does become a problem, by removing the addition. :)

Could this be modified so that editing a post both bumps the topic and resets the thread to New so the New Replies forum marker lights up?

Do you realize this is an eight year old thread?

Yes, I did realize it was a very old topic and the chance of a response was unlikely. However, I've tried every search and every place I can think of trying to find a particular mod or find out if it is even possible. Posting out of desperation now. :(

My apologies if this caused issues or was against the guidelines.

I wish I had seen this before. Does the code by Chen still work?

No.

Thanks.

Not sure whether it's of any use but I requested a bump feature script from nick a few years ago that displays a bump link text on forum display by each thread and silently bumps the thread to the top and it also updates the lastpost data on forumhome when a thread is bumped.

I configured the script so that it's only possible to bump a thread by staff and admins but as default only the group with higher privelages and the threadstarter can bump the thread without going into the post. Bump thread Script. Again, I don't know whether you'll find a use from it.

My main reason for wanting edited threads to be bumped, is because they need to be reviewed by a moderator. Editing threads leaves rule breaches under the radar, because they do not turn up in new posts.

But your suggestion did make me check out your site, which is good.