Along the coast of northern California.
Seashells washed up after high tide.
If you are looking to plan your next trip using a social networking site, these are a couple that cater to travelers.
This one, about planning your next trip, offers a map on the home page letting you know which countries are good to visit each month. For example, Chile, Australia and Tanzania are great places to camp in February. And if you have a question, you can post it in the site under the Answers tab. Other travelers will respond with their ideas. Check out geckogo.com to see how it works.
If you are into sharing, check out tripit.com. Users can log on to arrange airport carpools or volunteer as guides for travelers coming to their city. It’s great if you want an itinerary, too. You have to give them your email confirmations from air, hotels, etc. They then compile them into a complete trip schedule, including maps, weather forecasts, and restaurant ideas.