"This is only an educated guess, Ellen, but I think it's consistent with the timeline. During the early part of this year, we saw CNN and Ashton Kutcher - not to mention Oprah, Ellen and other celebrities known by just their first names - in a race to collect the most followers. This made Twitter a mainstream phenomenon (just like I predicted, btw). The 25-34 age group have been the main users until now simply because they're the ones who are most likely to be paying attention to emerging trends in the tech sector." - Scott Monty