Was Daddy-Long-Legs the first blog?

I am ashamed to admit this but I had never read Daddy-Long-Legs. Until now, that is (Thanks to Daily Lit, a website which sends books bit by bit into your email inbox)

Daddy-Long-Legs is a 1912 novel by an American writer Jean Webster, written in the form of letters. It follows the protagonist, a young girl named Jerusha "Judy" Abbott, through her college years. She writes the letters to her benefactor, a rich man whom she has never seen. (from Wikipedia.org)

I loved Daddy-Long-Legs. It is so much like a blog - the world's first ever blog. Imagine this girl writing letters to someone she doesn't know. She discusses everything with him - her life at college, philosophy, politics, etc. - knowing she will never receive an answer. And yet she knows that the letters are being read.

So much like a modern-day blogger venting his feelings into cyberspace unsure if anyone will read it and comment. Okay, forgive me - it's a far-fetched comparison but do read Daddy-Long-Legs (if you haven't already) and you might just understand what I'm talking about.