Zapdos was, in a sense, my first Pokemon - a friend of mine gave me a Zapdos card all the way back in kindergarten, before I even knew what Pokemon was. I have other favorites, but Zapdos always holds a place in my heart as a result, so Instinct was a natural choice. The internet doing its thing and making Spark God's perfect idiot was just a bonus.
Of course, I am one of only about ten active Instinct players above level 20 in my area. I'm not quite sure how, but every now and then we manage to sweep the entire riverfront for a few hours. Always fun to watch and help out with that.