Easiest way would be Tumblr I think. Write there, use the API to retrieve your posts and display it the way you like. Might be more tricky to use everything (co

Easiest way would be Tumblr I think. Write there, use the API to retrieve your posts and display it the way you like. Might be more tricky to use everything (comments, posts and stuff) from your website though, never tried it.