Handy plugin. As an event DJ, I like to post photos of my events. Originally, I would post separately to both WordPress and Facebook... it was very time-consuming to upload everything twice, post captions twice, and so forth.
This plugin allows you to post your photos to Facebook, but then echo them onto your WordPress blog. You only need to upload and caption the images one time. Another plus: the images all reside on Facebook's servers, so you don't have to worry about space/bandwidth on your own site. Unless FB ever somehow blocks this functionality from their end, this is a very useful, time-saving plugin.
But I've found the hard way, this plugin will not help you to get "pinned" by Pinterest users. I recently started getting into Pinterest. When I paste the URL from any of my blog posts involving Facebook Photo Fetcher, Pinterest sees nothing. That's because Facebook Photo Fetcher's default thumbnail size is too small for Pinterest to "see" any of the images. (Pinterest requires at least 200x200.) And as the author states on his own website, there is no way for users to change the size of the thumbnails generated by this plugin.
Unfortunately, social media is important these days, and I need a solution that will allow me to generate thumbnails large enough for Pinterest. As a result, I'm now switching to a different plugin. Although it means I'll have to go back to "double posting" all my photos, at least I can adjust the thumbnails to meet Pinterest requirements.
If the author ever reads these reviews, I'd be happy to pay/donate for a version that included capability to choose my own thumbnail sizes.