D Magazine is soliciting readers for their Best of Big D Readers’ Choice Poll, which will be published in the August 2010 issue. From their website: “Every August, D Magazine publishes its Best of Big D issue in which the editors name their favorites in food and drink, nightlife, shopping, goods and services, and culture and media. This year, we’re giving our readers a chance to vote for their favorites in each of the above categories.” Needless to say, the Baby Back Shak is among the favorites for best BBQ in Dallas. After all, it’s the unofficial headquarters of the…