Tonight I'm in Portland for tomorrow's SEMpdx Searchfest conference, where I'll be giving a keynote address at 9am on The Algorithmic Evolution of Search Engines and the Impact on Search Marketing Campaigns. Like most keynotes, it's designed to be more of a broad overview, focusing on understanding the hows and whys of modern SEO strategy, rather than the technical specifics (which is what I usually discuss). Plus, it features slides with each of the following: