This pool automatically mines the most profitable scrypt coin, automatically exchanges those coins for bitcoins, and pays out entirely in bitcoins.
There is no registration. Simply connect your scrypt miner to middlecoin.com:3333 or 8080 with your bitcoin address as your username, and any password. Payouts are automatic, and occur once a day, if your balance is greater than 0.001 BTC.
cgminer --scrypt -o stratum+tcp://middlecoin.com:3333 -u 1MpfkH1vDyGrmtykodJmzBNWi81KqXa8SE -p hunter2