relationship status

Hi Does anyone know how to target people who change their relationship status from married to single or complicated? or simply changes their relationship status? The idea is to advertise to these people or send them a message on their wall? Automatically if possible or if a notification script...

Hi Everyone - Im a newbie so be gentle! I have looked through pages and pages and cant seem to find a "scraper" that automatically posts a message when someone changes their relationship status - like "in a relationship" to "engaged" or "engaged" to "married" Does anyone know if this exists...