Actually, he tried to do more that go off-grid. Writer Evan Ratliff Tried to Vanish. It seems it is pretty difficult to do today. Still if he had abandoned using social media during that time he may have succeeded for longer.
I do take issue with the Wired piece on this point:
Hunters scoured the pictures on Ratliff’s Flickr page, writing software code to extract information about the camera used and search for other photos it had taken
You don’t need specialized software to do any extracting. Common features of any operating system combined with freeware can get you everything you need. Maybe custom software was written to search for other photos. So the phrase is only slightly misleading as written. But it does a disservice since most people just don’t get how easy it is to learn about posters from their photos. In most cases all you have to do is right-click and get image properties. But you certainly don’t have to write any code. As I mentioned before, this information is stored in all Yammer photos because, like Flickr, Yammer doesn’t sanitize the metadata.
Still, the article is well worth reading to get a sense of just how much tracking is possible. It’s not all big brother (gov’t) monitoring and it’s not all baby brother (corporations, including the retail sector) monitoring. Some of it is due to our own self disclosure proclivity.