In the early days of internet marketing, things were relatively easy. In a field often lacking in competition, a small business with a simple website and an ambitious and forward-looking marketing plan could kludge together a few images and a couple lines of text into a viable online presence. But those days quickly passed, and online marketing became a complex and multifaceted struggle between huge, well-funded behemoths and small, agile operations looking to innovate and disrupt their way into a fortune.