I've had this one used on me quite a few times as well, but I also get the one about if I don't help the cats will just be dumped and I think this one is carried out more than the pts threat and it is not just the moggies this is happening too now - I don't know whether the current financial situation is attributing to it but my latest addition is a gorgeous British Shorthair who, having been a housecat for his short 15 months, following a relationship breakdown, was just thrown out of the house with his friend, to fend for themselves.
I didn't hear about it until after the event but fortunately my neighbour did manage to find both cats, and managed to re-home one of them but was desperate for someone to take "Hudson" and came straight round to see me (unfortunatelly my threat of being full and taking no more in also falls on deaf ears.
).
However, I am glad she came to see me as MacLaren as he is now known is the most wonderful, placid, large cat and, having now been neutered, will save my hubby having to find me a birthday pressie.
So, although if everybody carried out their threat of PTS, I think we will still have a kitten explosion next year with all the un-neutered cats that are likely to be dumped because people cannot afford to keep them but do not take the responsible attitude with regard to finding homes for their "beloved" cats.