Quick and Dirty!
I was working on the Microsoft Live Search team and saw this way to get a quick estimate of the number of calories (amount of fiber, etc.) in a food. Needless to say, this is VERY ROUGH and quality varies from one food to another. Give it a try and see how much you can make it work for you.
To get to Live Search, enter www.live.com in your web browser.
In the Search box, type “calories blueberry muffins” and click the magnifying glass.