Those who don't have Excel may want to consider Open Office or Google Spreadsheets. http://www.openoffice.org/ and http://docs.google.com/
Nice work, GL. I'd suggest just a couple things:
1) Link to the games/threads you're referring to.
2) I always edit my first post and title before posting the day/lynch scene. This has the added advantage that when the email goes out to tell them that a new post has been made to the thread, it will have the corrected subject to show them that something SIGNIFICANT has happened. This seems to avoid missed night choices better.
3) I usually do confirmations in thread, again because it seems to increase the chances of the thread making it on people's Watched Topics list.
4) You might mention the perils of townie confirmation through identical role PMs. I never make more than one or two the same, and even then only when I'm feeling lazy.