> Surprisingly most normal folks don't really get what "follow" means, and the slightly arcane terminology of twitter. The learning curve is a bit steep - and most users sign up, hang around for a while, don't really invest in discovering and following the right people, and soon just give up and never come back.

Question, do these people who find it hard to grasp how twitter works have facebook accounts? As facebook is way more complicated than twitter is (which is just a textbox, a submit button and that's basically it).