RescueTime gets TechCrunch coverage using aggregate data they've collected (proving they not only have a great application, but are masters of developing content with high link-bait).

I've personally worked on products that account for 22% of total desktop usage (Outlook, Excel, Messenger). I wonder if the other product I co-founded (SharePoint) would also make the chart if RescueTime could recognize the various URL's as all being SharePoint web sites).