this won't have any bearing on linkedin because they see themselves as a (professional) social network, not a jobs site (even though recruiting is a decent chunk of revenue).

jobs seem to be a natural extension of google's search service, and a direct competitive response to indeed. these job search results will be useful to people but i don't see it changing the industry. discovery is an important step in getting a job but it's only one step.

(i say this as someone working on the matching problem between employers and employees.)