I have mostly had good experiences with Freecycle. I have given away many things, such as clothes, toys, even a couch and my old fridge! I have received also many things including my old composter, tiles and rocks for the allotment, clothes, two good tyres (!), a music stand and a bread machine! The only bad experience I had was when I turned up earlier than planned and got yelled at by the lady (even though she was home, dressed and obviously expecting people to turn up as the bags were all ready to go out, i thought it was a bit over the top).
You do see some names too often, I will not deal with those people. Yes there will be frauds but there are also plenty of genuine people.
I am still often seen perusing the piles of rubbish on the street when it's "big items" collection day, great way to pick up wood, containers, long poles and sticks for the lottie! My husband always wants to die of shame but I don't give a monkey's.