Dream about having the "Most Frequently Used" text box and words list while editing a post (may be on the right sidebar). I can add a new word that I frequently used to the list. When I click the post button near the list the selected word is added to the post at the current cursor position.
This can help a blogger typing some specific words frequently such as his web name, his web's URL, his name, words in other language and so many for what he want. It's like a small personal dictionary. This will make posting has more correctness and be faster.