The Food and Calorie Finder runs discreetly in the background taking note of popular foods on pages you surf and displaying the number of foods found in the status bar at the bottom of the browser.
When you are interested in finding out about nutrition for a food on the page, simply click on the icon to open up the side panel to reveal the full package. Once you select a food from the top panel of choices, the nutritional information will be displayed in the bottom panel. You can toggle which nutritional value you're interested in seeing, like calories or carbs - great for those on a diet.
If you want more detailed information, like a different serving size, just click on the food inside the panel which will open a new tab with full nutritional information about the food.
Other features include highlighting selected foods found on the web page you're browsing and an icon which 'lights up' when foods are found on a page.