I totally understand where Quadzilla is coming from. I agree on many of those points, although I would not too readily accept some of the more wild conspiracy theories. I've also read some of the literature that Quadzilla has referenced. Salient points, yes..........but the problems he brings up(whites people becoming a minority) are inevitable, unavoidable, and ultimately, unsolvable.
Black Parent + White Parent = Black Child
Asian Parent + White Parent = Asian Child
Indian Parent + White Parent = Indian Child
Semitic Parent + White Parent = Semitic Child
Diminishing European populations versus Increasing non-European populations(ethnic Arab, Black, Asian, Indian, etc...). Since many of the "white" nations are successful economically and have a general all-around upward mobility, this is going to naturally attract immigrant populations who simply do not have those same opportunities in their home countries. Japan and Israel are actually in fact facing some of the very same problems that many western European countries are facing, although it has not yet hit on that grand of a scale. The reasons are myriad, and entire books have been dedicated solely to the subject alone.
Globalization, Free Trade, and Genetics are a bitch. The good news, I suppose, is that no one can predict the future. Current trends may not happen at all. Disease, war, technological advances, or even genetic modification can change this. All I know is that we live in an era of Exponentialism, where changes are fast and sudden in this time than in any previous era in human history.