Great tip in the comments — making Safari read a .css file with textarea { width: 400px; height: 500px } in it force-resizes it to something you can imagine writing in. I like both MT and Wordpress better already.

Lots of other good user recommendations.

OmniWeb and Firefox on the Mac are both reported to support undo in the textarea, and Opera can save tabs on close. Will experiment with these and report back. (I use OmniGraffle, OmniWeb’s cousin diagramming app, and swear by it.)

And, thanks to del.icio.us, I found this delicious rant from May, Textarea, you are a sunken nothing:

And, while we’re on the off-topic topic of things that make it more pleasant to write in browsers, I’ve fallen in like with Spike. I wrote about it earlier for its network support, but alas, it only supports weak clipboard sharing (I can share mine with you, but you and I can’t create a single shared clipboard.)

I then deleted it, but have re-installed as single-user software, because having everything I ever put into the clipboard buffer get auto-saved makes both grabbing text and URL from a window as a 1-2 pattern much easier, and saves me from losing things I copy and then overwrite in HTML forms.