Despite its name (BTC is the market abbreviation for Bitcoin), The BTC-e exchange is set up to buy and sell multiple currencies; Bitcoin, Litecoin, Peercoin, Namecoin, Novacoin, Primecoin,Terracoin, Feathercoin and Chinacoin are listed among the many types they handle. BTC-e serves as a platform between buyers and sellers; this means they provide the means for investors to connect and make trades, but does not take any active third-party role in the transactions beyond that. Their trading system, however, is set up to optimize the value and fairness of trades for both buyers and sellers. They don't currently have US bank integration set up, so American buyers and sellers will need to use wire transfers or major credit cards in order to make their transactions. Their website includes market value charts for many types of cryptocurrency against major governmental currencies, and you can also track trade volume and your individual trade status. Their main page also includes a chat function where investors can communicate, and a live feed of their Twitter social media account.
Even though BTC-e is one of the best-known cryptocurrency exchanges in the world, little is known about its founders or history. It opened for trading on August 7, 2011, and it's known that it's based somewhere in Bulgaria (the site offers English and Russian language versions for its users).