I find myself writing more and more reports about what my students and I have done over a period of weeks or months. I tend to forget these things, and it takes me forever to think of what happened over a specific time period. Now that I have found a
decent online TODO list (that also works well on the iPhone), I'm looking for something that will let me record what I've done. I also wouldn't mind something that lets me add the amount of time spent or something, but I don't need a complete project management tool. I also don't want to use my list of past TODOs (though I certainly will use that, too), because I can't make a TODO item for every little thing I do, and especially not for my students.
So, any ideas?
EDIT: The title is a bit misleading (that's what I get for changing it around ten times), I'm not looking for a program, but for a website to do that. Though I'd take a program too, if there's no suitable website.