Umpf.co.uk took a look at what is made pretty obvious in the title.  The network areas within the male and female visualizations seem to be false through some miscalculations: a very easy mistake to make; but that doesn't remove from the fact that the numbers tell of a wide adoption to online social communication across multiple age ranges and audiences.  With 55% of over 65's on Facebook, we're going to see some long timelines!  Just to add, there isn't any copyright or ownership information at the bottom of the infographic, so here's the original URL, because I'm nice like that.