Belle, as I mentioned in the other thread I have used it to help stimulate appetites, the dogs love it, but I wouldnt feed it every day. I prefer to use kibble as their main feed, along with bones etc, so they keep their macleans smile!
I see the FfD has some nice chunks of fish in it, but really it's still a junk food for dogs, far cheaper to buy some nice fresh fish and add a little bit to your dogs' kibble. Just look at how much per kilo it works out at - for the same cost you could buy fresh salmon!
I only ever feed tinned to the skinnies to make them eat their kibble, or to old dogs that don't have any teeth left (still mixed with soaked kibble).
So, yes I keep a few tins of this and that handy, but try to avoid it.