Ask HN: blog dashboard / aggregator for bloggers?

Hi HN, I have a friend who is starting to blog and who blogs from many different blogging engines. Keeping track of passwords/email/accounts/etc. is turning into the usual headache.

My question: do any of you know of a good "aggregator" that they could log into? I.e. log into one place and see all the different blogs that they work on across twitter/wordpress/blogspot and so on.

Anybody? YC idea? :)