My mum used one for us, I used one for all 3 of my boys, my sister used one for her son, my friends all used one for their kids... guess what... noone has any issues with walking on their tip toes, chronic pain or any of the other so called side effects of using one. I even used a walker with my first, and those play centres for the other 2. In fact Ashton has a tigger jolly jumper and 2 play centres. Am I worried? No!

My opinion is it is absolute rubbish that it will harm your child. What will harm your child is not using these things appropriately, it is people who leave their kids in them for hours and hours daily. It is parents who use them as a baby sitter. When used appropriately I don't see how they can be bad. My children were certainly not behind in walking or having any issues with their walking, in fact the opposite when my 8.5 month old started walking.

I think you would be hard pressed to find someone who has had a problem for every person that hasn't. I am yet to meet someone IRL who has had issues with them, yet I know more people than I can count on my hands who haven't.

Just MY opinion of course.