What's wrong with Sam?

Why is it sometimes a new home is found for a pet instantly, whilst others languish for weeks or months with no interest? Usually I can give the rescue some idea: The picture they have used doesn't show his eyes - potential adopters don't 'connect' when looking through the listings. The pet profile focus's on the negatives - people don't want to feel guilted into choosing a pet, they want the one that they fall in love with. The pet is in the wrong location, try rehoming a kelpie in central Sydney for example. But today I got an email from a Wish - a cat rescue in NSW, asking for help. More kittens are arriving and things are getting desperate. In particular for a kitten called Sam. Sam has been at his foster home for some time now and by all accounts is a fantastic little guy. Cute as a button, friendly, happy and well socialised. But although Sam's PetRescue profile has been viewed 218 times, Wish has not received one single enquiry about Sam, not one. With new kittens on the way Sam's chances dwindle even more. He is only a few months old, but kittens who are just weeks old are always more popular. Sam is nowhere near adulthood, so won't be considered by those looking for a grown up cat. The only thing wrong with Sam is too much competition.