In post 16, Magua wrote:
This has come up before; I know GreyICE had a 24-hour grace period after a hammer for people to unvote in one of his Mini Themes, though the intention was to keep the scum from quickhammering in lylo if I recall correctly.
I wanted to see how players would use it. In practice it worked miserably.
It turns out the nice thing about hammers is that the debate ends. With a 24 hour grace period someone on the wagon ALWAYS gets cold feet for the first few days, so it just stretches to deadline.