SOURCE: tweservation SAN FRANCISCO, CA–(Marketwire – August 16, 2010) – tweservation is sponsoring a “Facebook Pic Challenge” at the SF Street Food Festival on Saturday, August 21st from 11 a.m. – 7 p.m., centered at Folsom and 25 th Streets, for a day of amazing street food. Challenge contestants can take pictures with their mobile device at the Festival under three categories: best food picture, favorite restaurant / food cart booth picture and craziest SF Food Festival picture (food or people). To enter, contestants should “friend” tweservation real-time reservations on Facebook, tag tweservation real-time reservations in the photo, enter category in comments and upload the photo to tweservation real-time reservations Facebook page via mobile device. For more details: ( http://www.yelp.com/events/san-francisco-tweservation-facebook-pic-challenge-at-sf-street-food-festival-2010 ) All photos will be judged by tweservation and the winners will be announced in each category on Facebook so they can claim their prize. The winners of each category will win a $50 gift certificate to a restaurant on the tweservation network ( http://www.tweservation.com/search.php ). Contestants must include the name of the restaurant / food cart sign or business card at the SF Food Festival in the photo to be eligible