Can anyone tell me what happened in the last three days here? Any reason for the recent little price drop?  
What about something like this http://www.nxtcoins.nl/50-2/ for Counterparty?

And another, more general question regarding the DEX: Can I atm only trade BTC to XCP on there or more? Let's say n the future there will be more con (LTC for example) can I then, after I bought LTC with BTC on the DEX, withdraw those LTC into my LTC wallet?