Bet/Fold on the River Line

[Befolder]

This is a line I'm familiar with, but not very good at applying.

Reasons I've heard to use this line:

<ul type="square">[*]When you would call a bet if you checked on the end, but could confidently fold if you bet and were raised (draw(s) come in on river)[/list]
For some reason my mind just went blank on the other reasons to use it.

Someone please finish my list of situations to use it.
Also, where is it applied where it shouldn't be?

I think one of my fears of using the line is getting bluff raised off the best hand on the river, but from what I remember, the river bluff raise is rare at these levels.

I just need a review so I can more confidently apply this tactic. I'm definetly losing value.