51% wouldn't be hard when the difficulty is usually floating around minimum (0.00024414)
I did have a small miner dedicated to IFC for a while, but I ended up needing it for something else. It was more to keep transactions moving rather than to secure the network (which would need significant hash power, and ideally more than one miner)
Cryptopia seems to be on a cull of 'problem' coins at the moment, so I wouldn't be surprised if it gets delisted
