After asking around for a bit, it seems like they regularly rip everyone off, because they can get away with it, and nobody tries to stop them. After asking around, anyone who answered my question said they themselves or someone they knew was robbed by pool.mn ; If only I knew what to do about this...
 
Coin devs should distance themselves from these people and remove the link to their pool from the front page.

Funny thing is I used to mine doge here too, but for a very short time, I got 2x as much everywhere else. I assumed it was from pool size or something, that was the reason people always gave me, not something I'll trust again even if it is true.
I guess it's so easy to take advantage of people some folks just can't help themselves.