Tracking what I'm doing
I've traditionally used a paper diary to record my daily work activities. At our team meetings, I then use this to report what I've been doing in the last week.
I leave the diary on my desk at work, so one problem is when I work at home, I need to try and remember the next day what I did.
I considered another blog for this purpose, but all I need is somewhere private that I can record short notes. Even better if they get timestamped.
Twitter kind of makes sense, except that I generally don't want these notes to be public, so if it isn't possible to keep them private then Notebook will probably win out.
We'll see if I prefer online to offline, but at least my typing is easier to read (and faster to enter) than my handwriting :-)