I've been trying to find a way to use the Toodledo API to do some advanced reporting on my tasks using a web service mashup/intergration web app. I tried Yahoo Pipes and a few others, but they fell short. Then I found something called WaveMaker, and there is now a cloud version in beta (instead of downloading it and hosting it yourself on your own server).
It looks like it may work, but so far, I'm having difficulties getting it to work. If anyone is curious about investigating this as a way to easily extend Toodledo's functionality, check out the link below, and let me know if you have any success. In the meantime, I will keep messing with it, and let anyone know if I come up with something.