The company had, has a loyalty program that would help business get and keep customers and give them a 10% discount when they bought from them and when they would tell others and or refer friends then they the referrers would also get cash on their Loyalty Card etc. Or they could put it on Facebook as an example, a little like advertising but at a LOT less money....this is a simple explanation.
Printed copy · Anthology Volume 9, page 1067Printed copy from The Tender For Law Anthology, Volume 9, page 1067 (printed 13 June 2014). Added by this site; not part of the Facebook export.