Small PPC Engines Revisited - Two years ago we conducted a study of small PPC engines to find out whether they offered online marketers a profitable opportunity to generate more sales.

At that time our research indicated that these smaller engines could indeed generate significant additional revenues.

Today, two years later, and with even more intense bidding for keywords on the major PPC engines – Google, Yahoo! and MSN – we wondered whether these smaller engines still offered a profitable source of additional traffic and income.