Yeah, I'm on Freecycle, although I haven't looked at the bulletins for a while, because I don't need anything. I did get my spin dryer from there, whihc has been a godsend, and I was able to fulfill someone's request for a bucket of pondwater (to 'seed' their new pond with bugs). My pond is an old bath, BTW, salvaged from a house renovation next door to my old place. In winter, when the vegetation dies down, you can see the taps...
I think people who are trying it on soon get ignored, or warned off. Mind you, furnishing a house, that sounds alright - after all, you get maybe one thing from one person, it's not like you expect one person to give it all to you. If someone's prepared to give it to you, fine. I like to think people will remember, and 'give back' someday...
Some friends of mine got a sofa, and turned up to collect it with another friend, who has the most enormous bike trailer. Apparently the woman giving was quite sniffy, until she realised that yes, they could get it on the trailer, and yes, they could take it away as arranged, whereupon she became very impressed indeed....