I must say that somebody registered SoHelpMeGod.com/net and SoHelpUsGold.com but these are just portal sites. It just seems lately that any decent phrase is registered and the more popular the phrase is... it is easier to remember. Legal services online seem to do very well and this is the only legal phrase I could find.
But I always wondered the real meaning when you are given the oath in court.... and they say "Do you swear to tell the truth, the whole truth, and nothing but the truth, SO HELP YOU GOD". Do they put the "So help you god" in to scare you that if you lie you are going to need gods help for the rest of your life cause you are condemed? and what about those who are atheist.
If I were going to develope this site, I would use it for either helping people who are having tough legal situations or... maybe for people on deathrow (like scott peterson) type of site , similar to smokinggun.com. A discussion board for the guilty as hell.