I started off day-logging symptoms, meds, etc. over at natdaylog on Twitter. That gets scrobbled to natdaylog. Now I am doing this on a new tumblr account also called natdaylog. The posts there get tweeted at the natdaylog Twitter account and so still get archived over at natdaylog but they are mainly links to the tumblr posts because those posts are longer than 140 characters (the main reason for the move - I can use real English and record more detail).