I was at a friends place with my now 5 month old dd. My friends sone had one of those 'static exercises' (in the mothercare catalogue) where the baby is supported in a little sling and they can swivel around and play with all sorts of interesting gizmo's. When I put dd in it she went mad, thinking it was jolly good fun and why on earth had I not been stimulating her more and throw away that boring old bouncy chair... Anyway, what's the thinking on babies 'standing up' in these things for short periods of time, before they may stand up on their own as it were? She enjoyed it so much I feel mean giving her those wooden toys now!