I have to conclude then, by casual observation, that Microsoft's opposition to the dump sites is not that they have the exact questions, but that Microsoft is not getting a kickback from the dump sites the way they do from the test sales companies. I would be curious to hear your comments on this.
Microsoft doesn't actually earn any money from sales of Self-Test or Transcender products, so if they did increase their level of "copying" I can imagine they would find themselves in court pretty soon thereafter. I really do think it's more a matter of outright theft and/or violation of NDA (the original questions were videotaped in testing centers overseas, then transcribed and reproduced as precisely as those videos would allow) rather than the degree of similarity.
This was first published in March 2003