Press It « WordPress Codex
So as you see, I am starting post a bit more. I was looking for a tool that would allow quick posting to my site. I tried w.bloggar, but I couldn’t get past the source code view when links or formatting are done to the test. So, I kept looking for a tool, and then remembered the bookmarklet. After a bit of searching I found it It is called Press It and is found at the bottom of your "Write Post" page.
Enjoy.