Sherman Oaks-based Advertise.com, the search engine marketing firm run by Dan Yomtobian, disclosed today that the firm is extending its offerings into the cost-per-action (CPA) category. The firm said that the new CPA services are an extension beyond its current cost-per-click (CPC) offerings. CPA advertising only charges customers for advertising when customer purchase a product, fill out a form, or perform another measurable action in response to an ad, rather than paying for impressions or clicks. Yomtobian also runs meta-search engine Scour; Advertise.com renamed itself from ABCSearch in April.