WhoKnows can enrich your people search beyond just your current users with our proprietary web profiles derived from public data on the web. This is especially helpful when the number of users is still small, but you still want to search the larger talent inventory for your organization. Eventually, when you're reaching full coverage of your organization's users, you may want to turn this off.
Go to the Admin link in the account dropdown.
Go to the Settings page and click the Search tab.
There's a switch where you can enable/disable enriching the search results with web profiles.