One can create an account on wp.com with:
"Just a username, please."
But when attempting to contact support through:
for problems with using their API key they get this:
"We only provide support for WordPress.com blogs here. Please go to the WordPress.org Support Forum for further help."
Then one must ask what the point is? Considering we cannot help them on wp.org when the API key simply fails to work.
For more, please see: