Livingston-based Foster Farms introduced its "Say No to Plumping" marketing campaign a while back, alleging that its competitors inject saltwater to increase the size of chicken sold in stores, while labeling the product as "natural." Doing so increases the sodium content of the chicken by up to 500 percent, according to the company.

The marketing campaign prompted more than 50,000 people to sign a petition urging the USDA to stop allowing "plumped" chicken from being labeled as a natural product.

Last month, the company moved the drive onto Facebook. A Foster Farms press release said the company plans to use social media support to convince the USDA that consumers want more truthful labeling.

Meanwhile, the company is sweetening the deal for its Facebook "fans." A sweepstakes will award a year's worth of groceries and five cash prizes once the Facebook "Say No to Plumping" page reaches 100,000 fans.

View the Facebook page (and enter the contest) here: http://www.facebook.com/#!/SayNoToPlumping