http://wikiless.i2p/wiki/Usenet?lang=en
However, as in SMTP email, Usenet post headers are easily falsified so as to obscure the true identity and location of the message source. [ 37 ] In this manner, Usenet is significantly different from modern P2P services; most P2P users distributing content are typically immediately identifiable to all other users by their network address , but the origin information for a Usenet posting can be completely obscured and unobtainable once it has propagated past the original...