As it is obvious, it enables that "thing" that you need to walk a certain number of steps till you are able to trigger the event again (I'm not gonna say anything more, because if you want to use it, just learn how it works by yourself)
Probably there should be something even better than that, considering RSE has an internal clock, but on the other hand, I bet it's something more complicated to deal with.
By the way, I still dont understand why I get so many visits, if I'm sooo boring >.<