Importing wordpress.com followers

To clarify, the transfer needs to be done by one of the engineers at wordpress.com (this message is on wordpress.org). This is a very common point of confusion.

I believe the instructions you need to follow are on
http://en.support.wordpress.com/moving-a-blog/moving-your-subscribers/#wordpress-com-to-self-hosted-site

And the contact link is
http://en.support.wordpress.com/contact/

On the contact page, it does appear wordpress.com is only offering support to paid members at the moment so I assume you will need a paid account with them to have them make the transfer.