Hi, my 8 mth old ds2 had a great time today playing in his baby friends babywalker. He is our third and I always stayed away from baby walkers in the past believing them to be unsafe. Apart from the risk of his falling downstairs in one (and we have no steps downstairs) am i right in thinking that they are also meant to be bad for baby's developing hips? If so, are they not the same as door bouncers which all of my kids have spent hours in and loved? Wondering whether to get on to ebay and buy one second hand but a bit scared of doing the wrong thing. Any advice out there? 