all lower case Or Capitalisation?

dear reader, i need your opinion: i write this weblog all in lower case, like all emails i write, probably since 1994. however, alp uçkan has good arguments for mixed upper and lower case. please drop a comment if you’d rather prefer mixed case, e.g.:

Dear reader, I need your opinion: I write this weblog all in lower case, like all emails I write, probably since 1994. However, Alp Uçkan has good arguments for mixed upper and lower case. Please drop a comment if you’d rather prefer mixed case.