The WIF private key is now shown directly below the addresses within the wallet.

Please print out, or import into another wallet.  Send transaction is not working at this time. Current wallet site will be going off line on Friday 3/7/2015.

There will still be a way to get private keys after Friday with your wallet key, but it involves writing a script and using my fork of bitcoinjs-lib https://github.com/p2pmining/bitcoinjs-lib

Sorry for the inconvenience.