Third Avenue dead-ends at Flatbush; concrete barriers block the intersection. For months, a simple graffiti message has been encouraging half the population: You go girl! (The exclamation point is mine.) Could be the same person who wrote on the Fourth Avenue subway station; the “x” over the i in girl is the same.
I found another one!
http://whatyourdonotknowbecauseyouarenotme.blogspot.com/2010/05/you-go-girl.html