a16z's @david__booth and @katiesquestions on how Cosign is different from LinkedIn: Katie Goldstein: "It's LinkedIn plus AngelList and Wikipedia all had a baby. It's this reputation layer that sits over it that is really the most meaningful information." "I curate my own LinkedIn, and let's be honest, I try to make myself sound really impressive. But more than anything, I wanna know what I think about other people and also what other people think of me." David Booth: "I don't think the…