[Gerald]

As others have mentioned there are a few sites out there already. SugarStats.com looks like a nice one.

Anyways, as a software developer I looked at this myself as well but I see the website as a means to view and analyze your stats rather then as a means for people to enter stats. I prefer using something I have with me all the time and I could not be bothered to re-enter them into a website.

I think SugarStats does a decent job of this in terms of accepting stats through e-mail and twitter but I still prefer a more at-hand tool. At the moment I use Diabetes Pilot for Windows Mobile which keeps track of my stats and gives me a few simple reports on my phone. Since I always have my phone with it has generally worked well though there are things I wish it did better.

I'm looking at building something on the Google Android platform but have not had time to do anything serious yet on that front.