HEATKEYS

Over 1 million professors & 10 million opinions. Rate My Professors is the best source of professor ratings based on student feedback. Find & rate a professor!

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

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.

featured events

Quora is a continually improving collection of questions and answers created, edited, and organized by everyone who uses it.

An index of current online research in Philosophy. Also contains bibliographies, discussion forums, and advanced research tools for researchers.

Discover our online network for research and download the free desktop tool that indexes and organizes all of your papers. Easy reference management and data sharing from Mendeley.

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

Bringing wisdom to life

Track your friends in the news, and see what we found about you. Check your Fame Factor and compare it to your friends

Helps groups of people with shared interests plan meetings and form offline clubs in local communities around the world

Online shopping from the earth's biggest selection of books, magazines, music, DVDs, videos, electronics, computers, software, apparel & accessories, shoes, jewelry, tools & hardware, housewares, furniture, sporting goods, beauty & person...