On the other, its very precise nature can quickly escalate into a dim haze of confusing lexicon, a bewildering amount of metrics, and complexities that surpass even many so-called specialists.
So why bother? What can analytics provide for me, and furthermore how is it worth the steep cost...whether that is in money, time, or sanity.
These three terms have been thrown around a a lot, and often used alongside each other. SEO and SEM have often been used interchangeably. So what's the deal with these concepts? How are they alike, and how exactly are they different?