I'm thinking about starting the first exchange that uses blackcoin as the primary coin of exchange. The code I have been working on would be similar to mintpal.
For example we would have:
BC <-> BTC
BC <-> LTC
BC <-> PPC
BC <-> DOGE
etc...
This would allow multipool exchange operators to directly exchange into blackcoin making it cheaper and easier for everyone. We could even do trading discounts on targeted currencies.
How much interest is there in this idea? I love the idea of a blackhole currency that absorbs weaker altcoins.
I wrote about this exact thing a few pages ago. This is what BC needs to set itself apart from other AltCoins. It would be nice if we could convince Mintpal to do this, like they did with LTC. It will make BC value explode overnight. But unfortunately BC is not proven yet and I think you would have to create the exchange for this to happen.
I have a lot of the code finished, and have been writing test code for it. If there is enough interest I might be able to start with a few currencies to test the waters. Otherwise I could always hold back and create complementary mining pool software go alongside it.