They neglected to add HootSuite to the analysis to i commented:
Thanks for name-checking HootSuite in your article but a wee bit surprised our social media management system is not included in your breakdown matrix.
Keep in mind, HootSuite has three products tiers: Free, Pro and Enterprise - as such, we serve over 6.3 million users of various sizes – from individual hoobyists to the largest brands in the world.
Further, we have extensive network coverage including Twitter (including Lists), Facebook (Profiles, Pages, Groups and Events), Linkedin (including Company pages and Groups), and G+ Pages (first to market).
Additionally, with our App Directory, we offer access to almost 50 more social services including Flickr, Youtube, Tumblr, Instagram, SocialBro, MailChimp, Constant Contact and dozens more.
We also feature international languages and tools with over 13 languages included plus networks specific to Chinese markets + Japan, Germany, France, Russia and so on.
Happy to share more info about our tools, culture and views on social media management. In the meantime, here's a media kit with all the basics: http://media.hootsuite.com/media-kit/