I remember years ago seeing plenty of signs around the University of British Columbia for roomates.
The issue: The word is “roommate” with two M’s. To many, two M’s seem too wide when the ad is printed using a printer (instead of hand-lettered).
(I did have fun with this several years ago at my alma mater. I wrote one of the April Fool’s Day student newspaper issues. Mine was about a new program that was to be starting up: Kangaroo Breeding and Husbandry.)