I've started using twitter as a way to record my blood sugars, food intake and eventually any activities (http://twitter.com/andycglucose if anyone is interested). Whenever I check my blood I tweet the number. Whatever I have for breakfast, lunch, or dinner, I tweet what I've eaten. Because I have my cell phone on me practically all the time, sending in the data is easy and fast. The date and time is recorded by twitter at the time it's sent.
I was planning on using a site called http://tweetake.com/ to pull my tweets into an excel spreadsheet monthly and build my data that way, but today I found what may be a better tool (and more private?). http://your.flowingdata.com is a site I found just today that allows you to direct message via twitter any info and the site will save and aggregate the data for you. I don't know what the data will look like over time, but I'm curious to see.
Is anyone on tudiabetes.com using twitter or another online service to record their data?