Do you know about the Librarians' Internet Index? It's a terrific database of hand-picked, hand-categorized Web sites on a variety of topics. Librarians and others select web sites for inclusion in the "LII", and librarian-editors confirm & verify that the sites are appropriate. A "weeder librarian" goes through older sites and verifies that they are still active.
This is a good place to start your search, particularly if you don't quite know what you expect to find. I recently helped a friend find reviews of films about the Holocaust, and we used the LII because it didn't include commercial or otherwise doubtful sites on this topic.
You can search the Librarians' Internet Index, but it's also fun to browse by category, such as ...
* Health (subtopics include: Diseases & Conditions; Senior Health;, w Women's Health, and more)
* Consumer Research & Advocacy (subtopics include Consumer Protection, Product Ratings, Shopping, and more).
* Hobbies (subtopics include Bird-watching, Crafts, and Historial Reenactments).
And you can see their New This Week sites. The June 7 list includes links to the New York Public Library's Science, Industry and Business Library Research Guides, a summer reading guide from Reading Is Fundamental, and Chow, a site full of recipes and more celebrating "food, drink, and fun."
The Librarians' Internet Index subtitle says it all: "web sites you can trust."