The internet runs on WordPress, with more than 59,000,000 blogs & websites running on WordPress.com (as well as potentially 100′s of millions of self-hosted blogs) you can’t deny that the well-known publishing framework is a substantial force in digital publishing....
Facebook. Twitter. Linked in. All 3 of these are undeniably huge. If you are creating a web app, how many of your potential customers use all 3? How about 2 or one? With over a billion people on Facebook it’s statistically unlikely that they don’t have an account on one of these three.