For those of you who have blogs hosted on blogger (like this one), and use emacs, I'm sure you've run into this - writing a post in emacs with auto-fill mode on leads to an ungodly amount of reformatting needed because of the insertion of hard line breaks.
If you weren't already aware of it,
longlines-modesolves this problem.
longlines-mode is an interactive compiled Lisp function in `longlines.el'.
(longlines-mode &optional arg)
Toggle Long Lines mode.
In Long Lines mode, long lines are wrapped if they extend beyond
`fill-column'. The soft newlines used for line wrapping will not
show up when the text is yanked or saved to disk.
If the variable `longlines-auto-wrap' is non-nil, lines are automatically
wrapped whenever the buffer is changed. You can always call
`fill-paragraph' to fill individual paragraphs.
If the variable `longlines-show-hard-newlines' is non-nil, hard newlines
are indicated with a symbol.
This, in combination with the ability to post stuff to blogger through email, makes using emacs with your blogger account a bit easier.
One more thing - never, ever, while in the blogger "new post" editor, hit Ctrl-P, unless you really want to publish. It can be awfully frustrating.