I'm fairly certain it has to do with the difficulty swings. Your share submissions between any 2 points in time will vary, sometimes drastically depending on the difficulty. In the end it will balance out. It is just hard to see immediately because this is a small pool. You would need to mine for probably week to see things smooth out, as long as blocks keep getting found. My worker tab hashrate on suprnova's pool moves around like 10mh/s every time i refresh the page. It is almost a useless metric. Just take your miners numbers as gospel. If you don't trust the pool, and aren't willing to wait a few days to see how things equalize, then move to a bigger pool. But it's not going to change the average mh/s reporting weird numbers on the websites.

No one is getting ripped off, this is like the most honest pool you will ever find. It is just small, and the person running it is having trouble keeping up with all the people flooding in. 

That reported hashrate on the website is an approximation based on submitted share calculations (if it is anything like suprnova's). Sometimes that share approximation will show higher than your local miner, and sometimes lower. In the end it balances out. Your local miner is the number you should be focused on. 

I don't think there is a pool in existence that will give you the exact reported hashrate that your local miner is. It is showing you an average based on your submitted shares. The calculation's results will sometimes show higher or lower hashrates at any given time compared to what your local hash rate is. In the end it balances out.

Well, it definitely seems to be a by-product of how things are setup, and it likely won't be as much of an issue if the fat-hashers stay. It is just a word of caution to small-time miners to think twice before giving hashes to this pool when blocks are hard to find. I'm honestly not even mad at you, or the service... Catering to every small-time GPU miner isn't going to get your pool anywhere. It sets up nicely for people that are capable of pushing big hashes.

At least your shares are still there lol

at least u got mona for ur hashes. A day and a half of mining (almost 7k shares) and then i went to groestl, come back here to start mining again and see my share balance has gone to 0, and I received no balance in return. My shares were dropped because i was helping out here when there was a big lul between blocks.

This pool is setup to attract big miners. Don't mine here unless there is some giant influx. If you mine between blocks and are just a small 1 gpu miner, your hashes will go down the drain. Just go to a big pool. They say the pool is setup to reward long term miners, yet it completely relies on giant hashing farms to join it, which usually comes in waves. So if you sit here mining when there is no help and a week sits between a block, you will get a garbage payout when the big boys come to help, and then they will leave, and you won't find another block til they come back. Rinse repeat.