Twitter: Some data released by French data analysis firm, Semiocast, suggests that there are over half a billion accounts on Twitter at the moment. While many of these are likely to be robots or other spam, this still an impressive figure. More from Mashable or check out this infographic from earlier in the year.
Facebook: Glut yourself on the smorgasbord of statistics provided for us by All Facebook, which cover the growth in users of the service from the end of 2010 onwards. Lots of eye-watering graphs, here, including an exponetial growth in the use of mobile devices to access the network. Read, and be amazed.
And if that’s not enough for you, then watch this video about the growth of the different social media networks – thanks to All Twitter for this link.