Don't Be A Free User
This article operates under the very incorrect assumption that paid services never shut down and free services are never carried on by their purchasers.See Flickr or YouTube or PayPal or Skype or Picnik or Grand Central or Picasa or Siri or mySpace or FriendFeed or FeedBurner or even pinboard's biggest competitor Delicious for examples of the latter.As for the former, there's an unlimited number of examples (for a few, try http://techcrunch.com/tag/deadpool/)Unfortunately, $7/month from a few people can't keep things afloat.