http://bp-chart.com - store you blood pressure records. Chart, statistics, table view. Share them with your doctor. "Take your pills" e-mail reminders.

Over 5k registered users, 3.8k monthly visits. I haven't had time for it in the past 2 years. I keep it around because it really helps people and that gives me a warm feeling :-). It could surely use someone with a heart for marketing. At least a few monetization options (cash could be gotten from users, caretakers, medical facilities, drug companies).