STRATHAM, N.H. — Premium chocolatier Lindt USA and its Lindt Bear premium chocolate figure launched the Mastering the Joy of Chocolate instant win sweepstakes on Facebook and www.LindtBear.com. The sweepstakes will give consumers a chance to win an assortment of prizes daily through Dec. 31, and could provide a healthy boost to online traffic during the holiday as well as promote engagement with the Lindt brand.