I think the site makes an important comment: I've had two very on-to-it people say in response to my share (legit.link pointing to itself), "I'm not clicking that".

My thoughts are, why should the the "obviously dodgy looking" link be any more risky than a bit.ly shortened one. Bit.ly is not coming out and saying "I'm shady", but other than that you have no idea what's on the other end (I'd argue most people don't know about the + on the end reveal).