JotSpot is a great idea: your own free, personal wiki. You control the levels of access (public, invite only, private). It's really easy to create new pages and links.

I read a post on SEOBlackHat about using a personal wiki as a kind of online notebook. The idea appealed to me greatly -- it's an easy way to store huge amounts of information and is available from just any web browser. I'm thinking of a wiki as a way to record notes for a novel -- make yourself a sort of a map. I won't use it for this particular novel but maybe for the next one (or the next short story?).

So check JotSpot out -- see if the wiki-as-online-notebook thing works for you.