Some people have Spades in their signature lines (Bronze/Silver/Gold)
At least one person had a diamond.
Because of the placement and similarity, it appears it's something "official"..
What gives? lol 
That has to do with the gardening thread in the Credit Card threads which is monitored by tinuviel.
http://ficoforums.myfico.com/t5/Credit-Cards/Garden-Club-Meeting-February-2013/td-p/1845569
July 2013 score: EQ FICO 819, TU08 778, EX "806 lender pull 07/26/2013
Goal Score: All Scores 760+, Newest goal 800+
Take the myFICO Fitness Challenge
Current scores after adding $81K in CLs and 2 new cars since July 2013
EQ:809 TU 777 EX 790 Now it's just garden time!
June 2017 update: All scores over 820, just pure gardening now.