The only way we can transfer ownership is from a request from the site owner in either a reply here from the site owner logged in under their username or via email from the email address on file for the site owner.
If they have lost access to their email account, they can try logging in with their username and testing different passwords using the reset password form. Often people can remember the password after a few tries.
If that won't work, and do not have access to the account email address, we will accept one of the following alternative account verification options:
* The API key associated with the account. Please see this link for more information on API keys:
* A Paypal Transaction ID for any upgrades purchased for the account. Keep in mind that since PayPal is our sole payment processor behind-the-scenes, this transaction ID was generated even if you paid via credit card or another method:
* The titles of any unpublished draft posts or pages the user would have created.
If none of this information is available, then there's nothing we can do to transfer ownership of the site. You would have to follow the steps @auxclass provided above to move your domain and content to a new WordPress.com site.
I hope that clarifies things!