After a quick 'n dirty analysis of the network distribution of hash on monerohash.com (divide hashrate of each pool by the number of miners in each pool), the pool monero.net has a per miner hashrate (137.7 kh/s) that is 40.4X that of the average of all other miners (3.4kh/s).
I can think of 3 reasons for this:
1) Someone is investing significant resources into mining monero in that pool
2) Someone has developed an optimized miner (GPU, etc)
3) And, of course, bonnet
If the reason is #1 - great. Whoever you are, thanks for investing 40.4X the average contributors resources to support the network.
if the reason is #2, congrats to whoever you are for tweaking the code. However, being that the security of the network depends upon the network hashrate, I think it would be beneficial to share this code, if it exists. Granted, if this code and individual exists, they are enjoying wonderful profits right now, so we would need to make the release of this code financially rewarding.
The pool reports finding a block on average every 7 minutes, therefore this pool gets a rough estimate of 2k XMR per day. So if this is an optimized miner, it will probably cost a lot.
Upon further examination, this pool might be the source of the network flucation (I think someone else may have discovered this before), as evident here:
http://monero.net/#pool_stats
However, even at the lowest points, this pool still hashes 600 kh/s, which puts the hashrate / miner at 29X the rest of the entire network.
Edited: interesting. With my new numbers (must have missed something in the copy and paste. woops!) when the low end of the wave is used, the average hashrate / user for that pool goes to 46.16, which is still 13X the average for all other users.
Thus, I propose a bounty dependent upon release of mining software that provides 29X increase in hashrate for my mining rig. I don't have much, but I planned on building a new rig soon. Thus, I will pay 500 XMR for this software (that might not exist), or contribute 200 XMR for a bounty for releasing the software (that might not exist) to the entire network (because if that happens, then the whole hashrate goes up and I'm just burning 200 XMR). Actually, to be honest, if I got it privately I would release it anyway because network, so we should probably try to get the public-release bounty going.
If reason #3, well... then.... people should really install antivirus software.
EDITED some numbers due to copy paste error. Edit time 10:45 AM EST.
I found interesting article from author of more efficient miner, but that is older from 2014
