Sounds like the Barnum effect[0]: "a common psychological phenomenon whereby individuals will give high accuracy ratings to descriptions of their personality that supposedly are tailored specifically to them but that are, in fact, vague and general enough to apply to a wide range of people"
So it scrapes a ton of data about people from public sources, and encourages them to give it access to their private data such as email as well..
What could possibly go wrong?
Crystal isn't a new app, I was using them years ago and they have a good integration using Linkedin. Also they launched in 2014, its been pretty much 3+ yrs.
What the fuck.
I really, really don't know how I feel about this.
Just playing with the Chrome extension and viewing linkedin pages of people I know.