Comment from Proactive Investors23 Sep 2013 16:58
They say this today:
"E-procurement firm @UK (LON:ATUK) leapt almost 30% to 59.5p. The company recently struck a deal with Visa, which means that when one of its member banks implements a procurement card programme, the AIM star gets a small percentage of each transaction.
Before this, the company was charging a flat fee, but now the more money its customers earn, the more its revenues rise."