Hi all, i don't normally export directly from lightroom to Facebook - primarily because of this problem - but i thought i'd give it another go to see if i could work out a fix - alas no, unless someone can help??
When you upload to Facebook using the facebook app or website then multiple images uploaded together are collated as a single post - uploading though directly from lightroom displays every individual image as a separate post. I'd prefer it if they were also collated - anyone know how to do this?? Is it a lightroom thing or a facebook thing?
The Facebook publish service in Adobe Lightroom allows you to upload photos to Facebook easily, automating image resizing and exporting the photos in a compatible format. However, if you have many images and wish to organize them into separate albums, or if you’ve reached the 200-image album limit on your photo album, you can easily create or select a different photo album for your photo uploads in Lightroom.
Also, it's true that it will do a separate post for every image you post on facebook.
Check the video tutorial here: Lightroom Tip: How To Upload From Lightroom To Facebook