US anthrax attacks - who did it?

It seems that the investigation into the US anthrax mail attacks has subsided to a murmur, but with so much rumor and innuendo, it's good to see one site compiling all the evidence and articles into one place. The site seems a little vehement in its defence of the only named suspect, Dr. Steven Hatfill, who has definitely been the victim of an over-zealous press at times. But much of the other information on this site, such as the fact the letters were cut down so they could be pharmaceutically folded, and that there were at least two mailings of anthrax, and the second mailing occurred after the anthrax had been further refined, is all extremely intriguing. Of course, there's always some blatantly crazed conspiracy theory (scroll down to the bottom of the page), but at least it's presented sceptically.