For Poles working abroad the money they earn is worth less when they sent it home (noimmi will be pleased). For people like me who want to move there it means I won't be able to afford to buy a particularly nice home outright.
As you said it wont affect me and will affect those that are sending money out of the UK, damn!
For Polish business the strength of the Zloty is bad for exports.
This I understand, but at present their economy seems to be stable and no where near as bad as some others in the EU.