Suggestion to Michael
Rename the "Medium Format / Film / Digital Backs – and Large Sensor Photography" to simply "Larger than 35mm Format".
Since it's Michael's Forum he can do as he wishes, but it seems to me if you limit it down to "larger than" anything think of the professional conversation your going to miss,
The guy who shoots fashion with an M-9, the photographer that uses all formats during a project, the person that might happen to stick a contax 645 lens on a Canon, etc. etc.
Then you have to know that you limit 99.9% of every
working professional photographer that has some dslr in their equipment kit, usually more than one. I have two medium format backs but wouldn't dream of going out on any project without a dlsr for a lot of reasons, including file quality.
Does that mean the larger than 35mm police (usually the guys with the 3 generation old 22mpx backs) are going to pounce if someone writes, "when V5 software collapsed I had to pick up my 1ds3 to finish the project?".
Also keep in mind if you limit this forum it's pretty much going to be relegated to questions like "when is Sinar going to offer a pc version of their software, or when can we expect Phase lenses?"
It's going to get pretty lonely here.
IMO
BC