Hi Brendan,
It used to be on DublinWaste.ie and was a Dublin-based service but it's gone national now. It used to be just for householders but now businesses can use it to advertise desks, filing cabinets, chairs etc etc and small start-ups could use it to set up their offices.
On a personal note, my Dad was taking the bath out of the bathroom at home and he didn't know how he was going to get rid of it without it costing him a fortune to have a waste collector take it. So I said to put it up on Free Trade Ireland and within 4 hours, he had someone interested! It was a cast iron bath (not one of the fancy free-standing ones, mind) in fairly good condition and a fella drove 50 miles down to the Midlands to take it from him. Dad got rid of the bath and the other chap got himself a bath in good nick and no money changed hands!
My wife was giving out that our coffee tables were (a) in the way and (b) dust catchers so I put them up and had a taker within an hour.
Anyway, the website is as above and there's a facebook page at ww.facebook.com/freetradeireland