Holly Eats is a nice website - how can you not like a site with a "grease stain" rating system. Chicago gets good coverage.
But I am much happier foraging about for an out-of-the-way barbecue shack, the best bowl of chowder on the Maine coast or a truck stop that still does home cooking. Three or four times a year I hop in my car, pick a state or two, and eat my way through them.
The Sushi Glossary/Lexicon is a great site with pictures
The Science of Cooking for adults and kids
Discover how a pinch of curiosity can improve your cooking! Explore recipes, activities, and Webcasts that will enhance your understanding of the science behind food and cooking.
And this should be bookmarked especially if you are anywhere close to Chicago