Here are some very interesting and up to date infographics (source SearchEngineJournal) on social media growth. While some of the data is US oriented, it is an interesting benchmark and reveals trends that will certainly ripple across the global online world.
Some interesting points to consider that you will see reflected in these infographics:
1) 53% of employers in the US research potential job candidates on social networks
Over a third said that a social networking profile proved they had lied about their qualifications on their CV.
13% claimed a potential employee had made discriminatory comments on their Facebook page.
9% said provocative or inappropriate photographs had been posted on the account of a potential candidate.