In the zero-results sets, Google was still willing to show AdWords, which means if we have customer targets, we can use remarketed lists for search advertising (RLSA), or we can run paid ads and still optimize for those. We could also try and claim some of the data that might show up in zero-result SERPs. We don't yet know what that will be after Google rolls it back out, but we'll find out in the future.
Search engine optimization consultants expanded their offerings to help businesses learn about and use the advertising opportunities offered by search engines, and new agencies focusing primarily upon marketing and advertising through search engines emerged. The term "search engine marketing" was popularized by Danny Sullivan in 2001 to cover the spectrum of activities involved in performing SEO, managing paid listings at the search engines, submitting sites to directories, and developing online marketing strategies for businesses, organizations, and individuals.
Remember when you used to rely solely on search engines for traffic? Remember when you worked on SEO and lived and died by your placement in Google? Were you #1? Assured success. Well, okay, maybe not assured. Success only came if the keywords were relevant to your site users, but it was the only real roadmap to generating site traffic and revenue.