Link Collections are microcontent, which must be used in the context of other content such as Topic Pages or Landing Pages. You can create Link Collections and embed them later, or you can create them while you're building the page on which you'll embed them.
You have the option to add an image to a Link Collection just like a Promo. An image is not required in a Link Collection but can be used to draw attention or add information when embedding Link Collections on Landing Pages or Topic Pages.
You can see different ways Link Collections display on a Landing Page in an example to the right.