You can manage your integrations by going to the Settings link in the Account dropdown and click on the Integrations tab.
Integrate with LinkedIn
You are prompted to integrate with LinkedIn during registration, but you can also import your profile and expertise here as well. Simply, click the "Visit Your LinkedIn Profile" button. Then, sign in to your LinkedIn account to import your profile.
Integrate with email
WhoKnows can import professional contacts from your work email. WhoKnows integrates with Gmail, Google Apps, Microsoft Exchange, and any IMAP email account. For Gmail or Google apps, click the "Connect Your Gmail Account" and authenticate your account. For Exchange and IMAP, click the "Connect MS Exchange or Office 365" button and enter your work email and password. You can always add more than one email account if you choose.