[Brian Pfleuger]

The edit feature doesn't disappear after a following post, it disappears after a certain time limit.

I don't remember how long. A few hours, I think.

As far as delete, it would need to have a time limit too, or someone with the wrong attitude could go back and delete all their posts (it's been tried) and create very odd, disjointed conversations. I didn't (don't) know that vBulletin even has such a (timed) feature.

You can always PM staff and ask them, or change the text to "Delete" if you're still in the edit time limit. We'll delete it if we see it, or no harm if we don't as it will only say "Delete".