New exchange: Vault of Satoshi
Please consider adding Vault of Satoshi to the list of supported exchanges. http://dogecoinaverage.com/ supports it, so it is feasible. Thank you!
Spencer Wilson commented
To have it displayed on the same graph of (BTC/DOGE) vs time, perhaps divide the VoS (USD/DOGE) price by Bitstamp's (USD/BTC) to yield VoS' effective (BTC/DOGE) price.
Seeing all exchanges on one graph encourages the market to reach equilibrium and discourages arbitrage! https://en.wikipedia.org/wiki/Arbitrage