Billy's Liquors in Abington was the place to be Saturday as several hundred fans of 50 Cent showed up to get a glimpse of the hip-hop star. So why was Fiddy there? To sign bottles of his Effen Vodka, of course. In the days before the rapper's visit, Abington police issued an alert, warning motorists that his appearance "may cause some traffic jams in the area." There was also plenty of security on hand to manage the crowd. Not everyone in town was thrilled that the artist formerly known as Curtis Jackson III was on his way. "He's not a good draw, not somebody you would see in church," Mike Franey, chairman of the Board of Selectmen, told the Brockton Enterprise last week. The rapper also stopped by Cure Lounge in Boston on Friday night to hype his vodka to a thirsty crowd.