Many buzzwords are deployed to one-up other buzzwords. After all, if everyone claims to be on the leading edge (and they do), how do you make clear that your technology is leading edgier? The vaguely aggressive sounding phrase bleeding edge does the trick! What's interesting is that, as originally coined, the phrase was not meant to be positive. This 1983 New York Times article, for instance, quotes a bank executive as saying "We ended up on the bleeding edge of technology, instead of the leading edge" when describing a series of catastrophic hard drive failures that soured them on a tech vendor.