There is always the cheap and private option to write 750 words a day in a text processor, and use Beeminder to remind you.
Of course - I was more advocating the practice than the program, as in my last paragraph. To be honest, $5 a month for something that takes 20+ minutes a day is cheap. The opportunity cost is much higher than that. You could earn more than that on Mechanical Turk in a fraction of the time.
Actually, the main downsides on a day-to-day basis for me for 750words are that you have to use your browser for a text editor which is OK these days but I'd rather be using my favorite desktop one, and that you need internet access to write it.
This is the public group instrumental rationality diary for October 16-31.
The poll earlier this month seems to be sufficiently in favor of maintaining the current schedule that extra votes are unlikely to change things much, but if you'd really like to register your opinion, you are welcome to do so here.
Thanks to cata for starting the Group Rationality Diary posts, and to commenters for participating.
Immediate past diary: October 1-15
Next diary: November 1-15
Rationality diaries archive