Whenever you share your Marketplace or Product on Facebook, we take our best guess at what image, title and description to use.  It is very easy to customize this if needed!

Go to Settings / General and locate the "Social Sharing" section.

Here you can upload your own image, title and description that will be used in your Marketplace (teaser) link and on your login page.

More information about image sizes can be found if you click the question mark next to "Image"

Once you are done, you can see what it looks like and tell Facebook to update the image/text in their platform by clicking the Facebook Debugger link.