Is Gmail the most popular email service?

I was recently going through the new sign-ups for this online bookmarking service and was amazed to see more than 95% sign-ups are with a Gmail account. Has Gmail surpassed all other email providers by such a huge margin?

While I can understand that most of the people sign-up with a free email account fearing that we may spam them (which we don’t as the existing users can tell you), this statistic did come to me as a big surprise. Do you agree that Gmail is now the most popular email service or you or you can think of some other reason why I am seeing so many sign-ups with addresses?

Added later: You may also look at Hey, a new email service launched by Jason Fried of Basecamp fame. Excellent spam protection features 🙂