i've continued my research on universities.
i think it would be interesting to share what I've found out.
first of all, here you will find helpful advice from LSE about writing your personal statement. Durham university also gives you some hints about writing a PS.
It might be a good idea to even mention your blog in your personal statement - who knows, it might impress a tutor if you go to an interview.
maybe someone is also thinking of applying to an American university like I do. however, I consider only Harvard.
and, by the way, the university of Oxford has updated the website - check out new info and even admisson statistics of 2008!