This guest blog post was written by Doug Bernstein. Doug is the founder and managing member of SEM Zen. Formally Vertical Interactive, the company has been delivering custom websites, web-based applications and creative solutions along with SEO and PPC management services to its client since 2000. SEM Zen is currently shifting it's focus to be a full-fledged Inbound Marketing agency utilizing Hubspot for itself and its clients as well. firstname.lastname@example.org is a great way to connect with Doug.