Admin Message -- Make a change?

Hi,
On WordPress.com - they have the ability to send users a message warning them. Like example heres the message:

Warning: We have a concern about your blog. Please contact as soon as possible to resolve this issue and to re-enable posting.

Is it possible for this Admin Message plugin to be nipped and changed allowing you to send it to specific users, or to specific blogs?

That would be great/

Thanks,
~Chewy