Huh... Yeah, I believe the Compendium is still not back up on the net, but here is the quote from it which refers to Rodoria's (I'd figure different regions would vary on that) various swears and exclamations:
[quote=Dark Jack] Swearing, such as our "damn it!" or "shit!" and other similar remarks are not used in Reniam. Instead, Kreshtaat's name is exclaimed. "Kreshtaat!"
 Exclamations such as "for God's sake", "oh, God, no!" and so on are not used. Instead the common exclamations include "By the Spirits!", "By the Planes!", "By the gods!", "By the demons" or, in cases of extreme emphasis, "By all of the Planes, Spirits, gods and demons!". In cases where the name of a particular deity is invoked, it is usually coupled with a defining characteristic about that deity. Examples include: "Reina's mercy!", "Rilon's thirst!" and "Frenis' greed!"
 Alternate, emphasized versions of the simple "what", such as "what the hell?" and "what the fuck?" are not used. Instead the phrases also used as exclamations are simply added a "what in the name of" at the beginning, although the phrase "what in blazes?" as known from Earth is also used occasionally. In the case of "the Planes", both "What in the name of the Planes?" and "What in the Planes?" are used.
 Alternate, emphasized versions of the simple "where" are all replaced with the phrase "where in the Planes?".
 Insults, such as "bastard", "bitch" and "son of a bitch" are not used. Instead common insults include "son of a tarke!", "demonspawn" (though this is not much of an insult when used about an actual demonspawn) and "goblin manure". The usage of more descriptive insults, such as fool, idiot and moron, are the same as we know them to be.[/quote] 

(Hmm. I have never actually seen "what in blazes" outside of a time or two in cases where it is very obviously only used for censorship purposes.)