1. Post updates on your activities regularly.  These will show up on the home pages of your connections, and will be included if they have requested a weekly digest of update activities.

2.  Use the updates you receive to stay in touch with your connections.  If someone reports that they have landed a new client or received an award, send congratulations.  If they have connected with a colleague of yours, let them know.  If they are working on a project and you know of a resource that would be helpful to them, send them the information.

Put a few minutes on your calendar each week to review and respond to your LinkedIn network updates.  You'll be both visible and helpful.