 Complete the following phrase:  Shirleys writings have sometimes been the cause of controversy. In a Slate.com piece with Neal Pollack, he compared rooting for the San Antonio Spurs to cheering for cancer. In a 2009 column for ESPN.com, he called the Beatles overrated, drawing the ire of fellow music critics. And in 2010, he published a blog questioning the potential efficacy of relief efforts for that years 