I was searching for this on BHW but couldn't find this info. So now that I found this I will share it with you guys: http://www.vapurl.com/ creates a shortened URL with a shelf life. Whatever your motivation for doing so, if you need to create a URL that has a fixed lifespan you can do so with VapURL. You plug a URL into the VapURL site or use the VapURL bookmarklet and specify the parameters of expiration. You can have a VapURL expire after a set number of visits, a set amount of time, or a combination of both variables.