There's a lot of dieting sites out there on the internet, but to actually use many of them there is some associated cost. Not at SparkPeople.com. This site is totally FREE.
This website is a great resource for folks on a diet. It is chock full of information on nutrition and fitness. Plus they have a "food tracker". You type in what you ate and it not only tells you the caloric amount, but will also keep track of your total consumption. Yep - an electronic food diary at your fingertips. The site also has daily exercises and a supportive (and very interactive, no pun intended) community.
There is so much to the site that you should just check it out for yourself. What's more? It's really easy to use!