There’s two type of search engine marketing commonly bandied around the Internet marketing water-cooler nowadays… Search Engine Optimization (SEO) and Pay-Per-Click (PPC). While SEO has had a more recent rise to fame, both have their own roles to place in a Search Engine Marketing (SEM) campign…

This blog post goes into some very interesting detail about the merits of PPC vs SEO, and indeed the fact that the two link and feed each other’s agendas quite well.

In the study “An Empirical Study Of Paid Listings In Product Search And Purchase” (PDF) the researchers found users to be suspicious of paid results:

For paid listings to yield the financial results that are
anticipated by the business community, it is critical that
consumers perceive paid listings and their descriptions
as relevant to their transactional tasks. The results of this
study support previous findings that this may not be the
case, but also provide some guidance for the
development of paid listings. Participants in the study
showed a bias against paid listings in several ways. They
reported an explicit suspicion about paid listings in their
verbal protocols. They rated the relevance of the paid
listings as lower than the organic listings despite the
content of the descriptions being controlled across listing
type

PPC is an ideal testing ground for SEO. Typically, the SEO guesses if a keyword term is worth the time and effort of attempting to rank for that term. Perhaps the keyword term doesn’t receive as much traffic as the estimated numbers suggest. By running a PPC campaign on the keyword terms prior to implementing an SEO campaign, the SEO can get more accurate estimate of search volumes. The SEO can also test out the wording of language on landing pages to see how altering the copy to favor search spiders makes a difference to conversions.

Similarly, SEO can feed back into PPC campaigns. Because SEO casts a wide net, traffic logs can sometimes reveal lucrative keyword combination’s that the research tools do not.

An SEO strategy, built up over time, should reduce the cost-per-click price of a combined strategy. If a site ranks well for expensive terms, then you may be able to switch PPC bidding away from these terms and use the funds on covering other terms.

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