While on the subject of multiple coins, I experimented with setting up a Monero pool while trying out some new pool software that was open sourced recently, mostly for solo mining purposes but available for any mmpool users who also want to use their cpus/gpus for something: monero.mmpool.org

It uses pplns as the payment system. You can mine to an exchange address if you don't want to set up the monero wallet. You can mine with a bitcoin address and the pool converts the monero to bitcoin using shapeshift or xmr.to depending on what has the best price.

Set the username of your miner to your monero or bitcoin address and the password to a user/worker name. If you append "+1234" to the username it'll start mining at difficulty 1234, useful for nicehash to start at a higher difficulty. If you append ".64_bytes_hex" it'll use the 64 bytes of hex as a payment id, required for some exchanges for depositing. These can be combined: eg. address.paymentid+100000

This is just an experiment, if I shut it down I'll rent hash to mine out the PPLNS time period so anyone who tries it gets their full reward.

I do like the pool interface. It makes me want to upgrade mmpool to be a bit more modern. The automatic payment to bitcoin is nice too - unfortunately I don't think shapeshift offers exchanges for any of the merge mine coins otherwise I'd add it to mmpool.