I have been mining on a pool for a couple of days now, it's a smaller pool and for a few days I was always in the top 10 with around 300 MH/s
In the past few days some giant miners have been coming in with TH/s of power, which in my n00b mind was a good thing.
It seems the admin of the pool does not feel the same and has been accusing these miners of exploiting the pool. I am not 100% sure why so I thought I would ask.
To add more info, I think what they are doing is dropping in and out of the pool. I can understand the admin want's miners to stick around, but is what the big miners are doing considered shady?
A little bit, yeah. That's why when Nicehash got hacked, and they shutdown the ability to rent hashrate, profits on altcoins shot up for independent miners. Nicehash renters will automate swooping in right before a block ends, and begins to get a giant dose of shares on pools that do PPS. This causes them to have a gigantic portion of the shares without putting in the full block effort and get a nice portion of the block rewards. Pool luck affects this greatly, and the total hashrate at the pool matters to make this technique work.