knew this topic would come up sooner or later.. I think that it all depends on your upbringing. if a white kid is raised around mainly black kids and all of his friends are saying "nigga".. depending on how close his friends keep him, they'll give him the green light on using it also.. another example is some might take another's comment out of context.. when I first started rapping, cats were sayin "yo, this nigga's nice" and even though I'm being referred as "nigga" it doesn't mean anything other than dude, son, kid, guy, g, whatever.. it's just a common word. I used to say it occasionally myself (almost without thinking), but now I see no point in saying it anymore considering it's racist background. I'm not black, I may surround myself with mainly blacks, hispanics, and asians, but I know my place and have the respect for all those around me not to say it.
other whiteboys.. I'm not so sure.. I know a lot of em that drop that N bomb every other word.. some are posers.. some are some gangsta-ass dudes.. I think what hip-hop music has done is turn a negative and derogatory term into a word used in everyday speech.
it's like "whatup, dude".. "oh whatup my nigga".. u go to both coasts and it's accepted.. just not as much for the white guys. One day, hip-hop'll be so oversaturated with white rappers that they'll all be saying it.. not just Lil' Wyte & White Dawg.