Here's one for the doesn't surprise us folder: Social media usage in content marketing jumped 500 percent in two years, according to a new Junta 42 study.

Other content products that have seen the biggest increases since 2008 are blogs, online video and eBooks, followed by digital magazines, podcasts and microsites.

Does this mean your company should be using the hottest tools and ditching the least popular ones? Not at all. What it means is that there are a lot more ways to communicate with your audience these days.