I said I would dedicate a post to this, and here we are. Crotch danglers. Baby Bjorns, Snugglis, and Infantinos are the most common. This is one of my soap-box issues. There are 4 main reasons why I really hate these carriers: 1) overstimulation of baby, 2) possible damage to the normal development of baby's hips & spine, 3) uncomfortable for parent, and 4) limit of uses.
Let's explore those a bit more, shall we?