The metadata of your campaign includes an image preview, a title and a description. This is the content which will show up as a preview when you share your campaign on social media; for example on Facebook. This should be descriptive and appealing in order to encourage your fans to click on your campaigns.
When creating your campaign, Linkfire will usually extract an image, title and description from the URL that you input. However, you can always override this with your own custom content.