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Mae Facebook yn wasanaeth cymdeithasol sy'n cysylltu pobl â ffrindiau ac eraill sy'n gweithio, astudio a byw o'u cwmpas. Mae pobl yn defnyddio Facebook i gadw mewn cysylltiad â ffrindiau, i uwchlwytho faint fynnon nhw o luniau, i bostio dolenni a f...

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

LinkedIn strengthens and extends your existing network of trusted contacts. LinkedIn is a networking tool that helps you discover inside connections to recommended job candidates, industry experts and business partners.

YouTube is a place to discover, watch, upload and share videos.

You may want to introduce Iconosquare to your boss: Instagram viewer and comprehensive suite to manage, promote and monitor your account, Iconosquare provides an all-in-one solution.

Higher education search engine and directory of world universities and colleges. 4icu.org includes 10,000 college and university reviews and web rankings in 200 countries.

LibraryThing catalogs your books online, easily, quickly and for free.

LLM GUIDE - Master of Laws (LL.M.) Programs Worldwide

Nature - the world

ChallengePost is the central platform for corporations, government agencies, non-profits, and individuals to solve problems.

Abbreviations - acronyms and initialisms from a database of over 600,000 entries covering computers, technology, telecommunications, and the military.