My blog entries are like buses, you wait weeks for one and two arrive at once.
My latest pet project is GRankT. GRankT is a simple website that will track the position of a URL within the top 50 search results on Google for any given search query. It's free and hopefully simple to use.
See http://grankt.sharedserver.net/ for more information.
The core functionality is there now, that being the basic website and the daily rank updates. To come is historic displays, almost certainly in some whizzy graphy-type form. Stay tuned.