So I was wondering about the use of a Jolly jumper.. I heard they were bad for bub, that they put pressure on the pelvis or something which in turn causes damage to the spine??

I will admit, I have not done much research, just read the first couple of things that came up in a google search. Some were for, some against and some said they were ok as long as they weren't over used..

So what are your thoughts? Have you used one? Would you? If you are against them and think they are dangerous do you have any evidence to back it that you could share with me?