I just read about WriteToMyBlog on Lifehacker.
WriteToMyBlog is a free web word processor for your Blog. Create Post Entries for your Blog from right here with our advanced word processor. Completely free, no membership required, can Post to multiple Blogs, view and edit Posts, works with all major Blog programs, and is easy-peasy!
Sounds pretty neat - very handy for those without HTML skills - or those lazy people with HTML skills who don’t want to use HTML 
Why might I use it? Well it has a spell checker - just what I want!!
