Heroic Liberator
Arcane
I wager that it wouldn't be that hard to make a script to filter Shoutbox posts which contain specific consonant clusters that are common in Polish which do not overlap with written English (e.g. prz, czsz) +/- Polish letters (a.i. ą, ć, ę, ł, ó, ś, ź, ż).
That would be all.
That would be all.