I don't really get why Baby Bjorn is such a popular make of sling? Everyone I have met who has tried one says they're uncomfortable (actually two people say they are comfy, but the rest say it makes their shoulders hurt). As an experienced babywearer I have tried lots of slings and carriers (the Manduca being my favourite to wear on the back, on the front I prefer woven wraps). So I can't really critisise people when I don't know how it actually feels - but from what I've read, and what I can see, there are many much better (ergonomically) slings for baby and parent out there. It just looks uncomfortable for the baby to be hanging by the crotch, and I feel like saying something to every Baby Bjorn user I see, but obviously that would be rude.
Why are they so popular, and why don't people do a bit more research before they buy their sling?