The NameBase Exchange is a San Francisco-based exchange. The exchange's liquidity is low, which could be owing to the large number of trade pairs available. On the exchange, HNS/BTC was the only trading pair available. The Handshake Coin ticker is HNS.
The activities of this exchange are actually rather sophisticated; from what I've seen of the HNS token, it appears to be linked to a corporation that creates domains for users or even allows HNS coin holders to construct and own their own TLD. NameBase Exchange has a reasonable trading charge of 0.10 percent for takers and 0.00 percent for makers. I wasn't really interested in this exchange's activities due to the small amount of cryptocurrencies available and the exchange's complications.