Regarding Mark Waterbury scientific analysis, there are three articles which could be considered scientific.
The first, "Canary in the LCN DNA Mine, Part I" dated 7 August 2009, is as he describes "background on DNA", and the information can be found from better scientific articles on the web.
The second, "LCN DNA Profiling Part II: Watch Where You Sneeze", dated 16 August 2009, is criticism he has arrived at from reading other blogs and media reports, and not from "access to the court documents" as he describes earlier in the thread, from what I can tell.
The third, "Methods of the Polizia PseudoScientifica: A Knife, a Clasp, a Glow" dated August 28, 2009, some of the contents of this article has been discussed on these boards in much more detail, and he contradicts some of his arguments later in his blog (was Sollecito DNA in the room or not in the room).
Plus he needed someone (anonymously) to check his reasoning, and the rest of his blog contains xenophobic rants and a (unoriginal) conspiracy theory that Knox and Sollecito was framed with planted evidence to cover up for Guede, who was also arrested and charged (how does that work, they plant evidence to frame someone, but not destroy evidence to cover up for Guede?).