How do I get it?The Favourite Posts for Google+ Chrome extension is available . Just click the Add to Chrome button to install it.
How do I use it?When you find a post you want to save for later, simply click the Favourite button (with the star icon).
To find posts you have favourited, click the Google+ menu button in the top left corner (it probably says Home) and select Favourites from the menu.
Tip: If you don’t see the Favourite button or menu item after installing the extension, try restarting Google Chrome.