As an online marketer, it is essential to be able to think on your feet to avoid falling behind. In this incredibly competitive industry, uncreative solutions quickly end up growing saturated, and saturated markets become havens for spam, inflated pricing, and low quality traffic.
There is a reason for the ever-frequent failure of PPC campaigns and SEO efforts: they are too popular and competitive for most online marketers.
However, there are still some traffic assets out there that are both inexpensive, sometimes even free, and unsaturated.
These five search-based traffic sources appear in all major search engines (Google, Yahoo, and Bing).