It's one thing for a nobody like me to do that but for a somewhat well known and popular service to blatantly lie without even giving a hint to the deceit is pretty low rent. I've got 13 people signed up to test a beta, 50 users from the original version which was a quick weekend project but if I saw those numbers grow at a rate that told me my project could attract a few hundred to a few thousand users I'd take those logos down so fast your head would spin.
ButI got the idea from others who have done the same thing with the heading saying something like "Soon to be featured on". Anyway, my whole point is that at a certain point it's not even okay to do that sort of thing jokingly and to fabricate a quote when you've got backing and so much visibility is dangerous because eventually someone will catch you like the OP did here.