It's a CarbonWallet passphrase.

Author: carbonwallet

index.html

@@ -81,7 +81,7 @@
           <h1>It's time to get serious about online Bitcoin wallets.</h1>
           <div class="well" id="form-well">
             <form>
-              <input id="password" placeholder="Enter your 12 word passphrase." value="" class="input-medium" type="password" />
+              <input id="password" placeholder="Enter your CarbonWallet 12 word passphrase." value="" class="input-medium" type="password" />
               <input id="open-sesame" disabled data-toggle="collapse" data-target="#create-keys" class="btn disabled" value="Open Wallet" />
               <input id="generate-password" class="btn btn-success" data-toggle="collapse" data-target="#create-wallet" value="Start a new wallet" />
             </form>