GoodGuide

If you care about the environment, check out GoodGuide. It's an excellent guide to healthy products. Here's what I like about it:

They stick to the basics. Design is clean with enough white-space to let the eye rest.

The “Quick Product Picks” section is really useful. I imagine they did a study on what 90%+ of their audience look for most often - then they designed the “get recommendations” engine. I used it right away.

Immediately under “Search” they mention that they have “61,041 products.” It makes sense to do that. I would make sure that number is updated frequently (ticker-style) to ensure that people are reminded that the product selection is growing. That's an easy thing to do.

Good people at GoodGuide: Cool product!