Let's face it, the limitations of Buck Shaw Stadium often suppress the atmosphere of the crowd during Quakes games. Writer and author Alan Black, who curates The Beautiful Blog at SFGate.com, spends an evening with the 1906 Ultras supporters group and learns a little about what motivates that raucous byline bunch. Shameless plug for Mr. Black — his first book Kick the Balls is a Center Line Soccer favorite.