Interesting post here on using a gmail (or indeed any free webmail account) as a journal or note-taking system. The great thing about using Gmail is of course the labels which means you can organise your notes easily. I might try using this, although I do tend to use this blog to make notes of things.
Perhaps I might use my spare Yahoo! email address for this, becuase at least then it is in the same place as my online calender and stuff. It would be easy enough to set up folders on the email account for each type of note, which I would then put in the subject header, meaning that stuff can easily be found.
I have 50 Gmail invites to give away, by the way.