I am advised by a contact that without attracting too much publicity, LinkedIn has updated their privacy conditions. Without any user intervention, LinkedIn is now permitted to use your name and picture in any of their advertisements.
Actions you might want to consider:
1. Place the cursor on your name at the top right corner of the screen.
From the small pull down menu that appears, select "settings"
2. Then click "Account" on the left/bottom
3. In the column next to Account, select the option "Manage Social Advertising"
4. Finally un-tick the box "LinkedIn may use my name and photo in social advertising"
How to inform your LinkedIn connections?
Via your LinkedIn Inbox > Compose message in LinkedIn, you can send a message to 50 connections at once. All who, I am sure, will appreciate being informed.