During the Blackcoin mining I started the first hour, and mined for a while. Then I never paid attention until (3?) weeks later when I figured out Blackcoin had turned to Proof of stake instead of being mined any more. It turns out mining was a week or two long (iirc) and then dedicatedpool "closed" the pool and "confiscated" any coins left in the pool.
It was total BS, they just wanted to grab the coins from the pool from anyone not following the situation, it wouldn't have been a problem to keep the wallet up, or to return the coins at request but they wouldn't. At the time the only thing I cared about was the principle, but now it's turning out that those days of mining could have been measured in BTC/day at current rates (instead of the meager 0.0x BTC/day at that time).
There's two sides, sure they don't need to keep the pool open forever, but they purposely closed it to keep the coins. I should have set auto-payout, but I was sick of installing "random" wallets when there were a few new wallets coming out with viruses so I thought I'd see what happens and possibly go direct to an exchange. I was out of town for a while after it was released to so I didn't follow it carefully. They also basically said FU when I inquired (nicely) about the coins.