As funny as it may sound, I might be more nervous about a blog post than writing a novel.
The thing about a novel is that it takes time (some I wrote faster than others) and then someone else reads it and yet another person edits it. The feedback process can take longer than the writing process.
With a blog post you are deciding what you write and then hitting enter. I won't have honest people tell me that they need development in a certain area or I might not have been as clear as I intended.
What there is in a blog post is honesty. There is something raw about putting your thoughts out so quickly. I may write the thoughts and actions for my characters but they are for them. Somehow the blog post is more telling since it is about me.