As part of making sense of a sprawling photography Web presence (see the additional links in the footer at the bottom of this page), Thom Hogan launched this site dedicated to the so-called mirrorless cameras in 2011. Prior to that, he had been covering them on the bythom.com site since 2009.
These small, sophisticated mirrorless cameras have come to replace the larger DSLRs that Thom covered since 1999. One of the things that was happening on his old, single site was that it was trying to do too much in one place. That was also holding back a significant site-redevelopment project, too, as the constant adding of more compact and mirrorless camera information to an already huge site was resulting in more things needing to be done on a new site design faster than I could deal with them.
Unfortunately, the parade of cameras, lenses, and accessories for mirrorless cameras started to outpace what Thom could handle, and the sansmirror site had to be mothballed. Nikon Z System mirrorless cameras are still covered fully by Thom on the zsystemuser.com site, though.