I started this project about two months ago, and being terribly curious, I decided to apply for an ISSN, the International Standard Serial Number. It is a number, similar to the ISBN for Books, that uniquely identificates periodically issued electronic or printed works.
Being the one I am, I dropped the responsible organisation in Germany a line applying for one, and got one back. The essence is that Blogs in the EU don't get an ISSN. For your interest :-)