I have since the end of 2011 been working to make modifications for removing verbal blasphemy (OMG/JC/G-dammit/etc.) from the games I could. Some I could only adjust the subtitles but with a lot I could alter the audio as well. Basically I just remove the particular words from the sentence so that it appears as if no blasphemy was ever there to begin with, basically my mods are optional blasphemy filters. Admittedly I have at points been a bit harsh in my definition of what exactly entails blasphemy but I generally follow a rather safe than sorry road.
All I removed was the blasphemy and not the swearing/cursing because that would require a completely different approach and much more work on my part, honestly usually at some point I just get sick of tinkering with such matter... especially if I have already been working on a game for a month or so. I plan to use my CenBlas mods in the future as a base to work from and rid the particular games completely of profanity.