Set up your LinkedIn preferences so that you are receiving an update email at least once a week. Use the email as a reminder and, when you receive it, scroll to the bottom and click on 'view all network updates'. Take a few minutes to scan the latest updates from your contacts. Send notes to congratulate others on their successes. Comment on and share links to items of interest. Check out who is newly connected with who and identify someone that you'd like to be introduced to.