What are some alternatives?
Bitfinex - Bitfinex is the largest and most advanced crypto-currencies trading platform.
LocalBitcoins.com - LocalBitcoins.com is a person-to-person bitcoin trading site.
Kraken - Kraken is a robust, ultra-fast image optimizer. Thanks to its vast array of optimization algorithms Kraken is a world ahead of other tools. Want to save bandwidth and improve your website's load times? Look no further and welcome to Kraken!
Uphold - Move, convert, transact and hold any form of money or commodity. Instantly, securely and for free.
Electrum - Electrum is an easy to use Bitcoin client.
LocalMonero - Get Monero. Fast, easy and safe. Near you.