Elizabeth Marsten is director of search marketing for Portent Interactive, an Internet marketing company in Seattle, WA. A Google Certified Individual and a Microsoft Advertising Accredited Professional, she manages the PPC, search engine optimization, link building, and social media teams in a variety of industries. Elizabeth is co-author of Web Marketing All-in-One for Dummies (the Online Advertising and Pay-Per-Click installment) and the eBook series: PPC for Your Small Business.