HEATKEYS

Facebook 是一個聯繫朋友、工作伙伴、同學或其它社交圈之間的社交工具。你可以利用 Facebook 與朋友保持密切聯絡，無限量地上傳相片，分享轉貼連結及影片，還可以幫助你增進你對朋友的了解。

foursquare

food portal,B2B China Foods Marketplace, Trading Board, and China food manufactures,exporters,importers,factory directory, products, wine, white milk,dairy products,food additive,Alcohol,Health Food Bread & Biscuit,Food Processing Machinery,Bean ...

Bitbucket is a free code hosting site for Subversion (SVN) and Mercurial. Manage your development with a hosted wiki, issue tracker and source code. Free for 5 users.

Yahoo! Groups offers free mailing lists, photo & file sharing, group calendars and more. Discuss hot topics, share interests, join online communities.

Find information about academic papers, authors, conferences, journals, and organizations from multiple sources.

Free Time Tools for Millions of Places World Wide

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...

Twitter is without a doubt the best way to share and discover what is happening right now.

Exportpages, Europe?s leading export-network, connects sellers to buyers worldwide. Find Products, Manufacturers, News, and Partner Opportunities!

TradeKey.com Business to Business marketplace, B2B Marketplace, Import export marketplace

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.