If I remember correctly, the email address for the Spider Robinson account was the one used on the official SR website, so that seemed legit, and he mentioned he was just here to put in a good word for Videomatica. I'm guessing that Videomatica would be that sort of long-established artsy inventory video store that would have a lot happy customers, which might spill over to the online.
I'm not sure why all the fuss about the "ripper" comment - renting DVDs is legal, and while I'm no lawyer but I can't imagine a throwaway comment would even serve as the basis for some sort of nuisance suit given the underlying business is legit. Perhaps not in the best of taste, but nothing worse. Any copying/lawbreaking is the responsibility of the renter. Any Videomatica customers know if there is a boilerplate anywhere about illegal copying once you log in? Most sites have one but I couldn't find any sort of "terms and conditions" while wandering around.
It looks like they are now accepting customers from all across Canada - I should probably go to the trouble of adding them to my inventory chart. Their site is a little weird for my purposes, but I may be able to adapt the code I used for Premieres.