A combination of things that isn't optimal: - Text files, named by date, in a directory called "notes" - Items in my to-do list in Astrid (app for Android) - For things I've thought a lot about, either text files of their own or pages of a notebook (the latter being rare).

I was actually thinking about building an app to deal with this. However, EverNote looks appealing and I should try it out . . .