When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
You can also use the "image" icon. Click on the icon of a landscape, navigate to your attachment and upload. It no longer has to be an image (I just tested this with an Excel file - it will upload to your post, but you can't see/manage it unless you click Advanced)