HEATKEYS

Flickr is almost certainly the best online photo management and sharing application in the world. Show off your favorite photos and videos to the world, securely and privately show content to your friends and family, or blog the photos and videos you...

TripAdvisor - Unbiased hotel reviews, photos and travel advice for hotels and vacations - Compare prices with just one click.

Photo-sharing community. Discover the world through photos.

foursquare

Facebook is a social utility that connects people with friends and others who work, study and live around them. People use Facebook to keep up with friends, upload an unlimited number of photos, post links and videos, and learn more about the people ...

Leading Chinese online school, best tutors from China, 10000 MP3, 4000 course pages, 1000 exercise games and largest Chinese learning community, make friends, play games, have fun!

Google+ aims to make sharing on the web more like sharing in real life. Check out Circles, Messenger and Hangouts, just a few of the things we've been working on.

italki is a language learning social network that connects students and language teachers. You can find language exchange partners, practice speaking a foreign language, ask questions, find free online language resources, and get help from an intern...

Join us at the Autodesk Online Gallery Community!

These are just my opinions based what I study and read up on. Hope you find them useful. Comments are welcome! Check out my YouTube channel: youtube.com/jerryliufilms