This is actually really happening. Ad age reports: This is "an actual scenario, being played out again and again, in the service of a web app called If I Die from a startup called Willook. Two Israeli boutique agencies have collaborated in the effort, which chooses prospects from the Twittersphere, follows their feeds and -- using the geolocation metadata embedded in the tweets to ascertain the prospect's whereabouts -- phones them there to recommend If I Die. Yes, the marketer just appears, like the Grim Reaper, to warn you that the Grim Reaper can just appear. The offer is to leave a farewell (or parting shot) for friends, enemies or loved ones via your iPhone or whatever."
Read more about this rather creepy use of technology and social media.