This is an anonymous account for obvious reasons. I also did the same job as the AMA OP, used this linkbaiting technique for over a year.
Posting as I think HN would be interested in the results.
Tens of thousands of optimised backlinks, Quality trusted links from major news publishers (almost all of them), Search traffic up from 30k a month to 200k, 800k to 1mill visitors a month.
The infographics game is almost up for linkbaiting. Most of the people using this technique are now moving on, including myself.
Expect some interesting innovations in this space.