Current Doom-O-Meter headline:
The Doom-O-Meter gathers information from various sources in order to compute a single number, the severity. The data from each source is assigned a weight, and added to create a sum of badness. The severity is computed as the base 2 logarithm of the badness. This means that a severity number of 6 is twice as bad as 5, four times as bad as 4, eight times as bad as 3 and so on. To read more about the Doom-O-Meter, or leave a comment, visit the Doom-O-Meter weblog post.
If you want to know WHY the Doom-O-Meter behaves the way it does, the current data sources (thanks a lot!) are:
Download: Doom-O-Meter Widget.
Instructions: Mac OS X 10.4 Tiger is required. If you’re using Safari, click the download link. When the widget download is complete, Show Dashboard, click the Plus sign to display the Widget Bar and click the widget’s icon in the Widget Bar to open it. If you’re using a browser other than Safari, click the download link. When the widget download is complete, unarchive it and place it in /Library/Widgets/ in your home folder. Show Dashboard, click the Plus sign to display the Widget Bar and click the widget’s icon in the Widget Bar to open it.