I have to be honest — the DCist staff was about 95 percent sure that the Craigslist ad for a 16-cat Dupont sublet which we featured yesterday afternoon was a fake. And that was well before I received an email from one “Fred Decatt” (get it?) last night, claiming to be the poster and asking me to be “more receptive and tolerant of cat enthusiasts such as myself” in future posts. Of course, by the time another reader forwarded us an email exchange in which the photo to the right was proffered as a photo of Bitnum, one of the cats listed in the ad, well, the inauthenticity of the ad was pretty much a foregone conclusion.