I don't remember if I read it here or another thread and please don't laugh
but someone suggested that it may be actually more profitable to mine the 2nd most profitable coin...
Think it through. Middlecoin and Multipool are both running at nearly 1 Gh/s EACH. This pool will be around 300 Mh/s in the next day or so. That's around 2.3 Gh/s of hashing not counting the multi coin pools I don't know about. Middlecoin and Hashcows mine and auto exchange, probably at the same time. Multipool has a rudimentary auto exchange system via Cryptsy and will no doubt soon move to a more integrated system like here and middlecoin.
So what is happening is that a shit load of newly matured coins are hitting the exchanges at the same time and the expected price goes south and we get a less than expected return. The other side effect of massive hashing power hitting a coin is that its difficulty goes through the roof making it a short lived love affair. If a pool was milking the 2nd best coin, the profitability would still be high and the difficulty would rise more slowly. The kicker is that when the coins were auto traded you woudn't be competing with a gazillion coins from the other sites...
I know it an idea from left field but it might be worth trialling. Thoughts?
That was indeed this thread, I had suggested it. I only put it out there, where you elaborated on the best reasons to implement it. However, everyone is going to use a different algorithm to determine best coin, so it may not always coincide on each multi - multipool and hashcows publishes theirs, but middlecoin does not. You can sometimes make an educated guess as to what coin it is based on the difficulty, but with the lower diff coins, not always.
Perhaps looking for high reject rate or super-fast block finding (in relation to the target time) would give an indicator that the coin is being hammered, and that coin can be moved away from even if the profitability number is highest