I have two integrated questions.
1. If I plan to mask a domain, does the name of the original blog matter? For instance, if I want to blog at http://www.sarahsmith.com (for example), but http://sarahsmith.wordpress.com is already spoken for, could I register a random URL and mask it as planned (eg http://ss.wordpress.com)? I understand that when your payment expires, your masking resorts to the original blog URL.
2. I own a domain and want to convert my blog to the new URL with masking and domain forwarding. Do I need to completely erase the content on the website I own so that my blog can seamlessly convert there? What needs to be done at the non-Wordpress website to facilitate this process?
Thanks in advance.