Please Believe In YourselfI have a friend who's really a good writer and is just starting to blog and sends me things she's written asking if I think they are good enough to post.
First of all, she's just plain good and shouldn't hesitate to post things.
Secondly, it seems to me, a blog is a sketchpad, a place to try out things, and the last place you should feel you can only post "perfect" writing. Forget that. If a blog doesn't make you feel MORE free about writing than any other medium, then there's something wrong. It should make you feel free.