Just discovered that if you upload a photo to Facebook from your phone, then upload the exact same image to the same post from desktop, the quality difference is huge. FB compresses the crap out of phone uploads.
Here’s proof — I uploaded these images from phone, didn’t give it much thought. Then later that day viewed the post on desktop/web and realized they looked like crap. My normal workflow is to do all posting from desktop, so I don’t typically see this effect, but this time, it was dramatic. I then added the same images to the post from desktop and arranged them side-by-side for easy comparison. FB doesn’t just compress a little from the phone, they compress like crazy.
Enough to get a feller running back to Flickr… but then I thought this must be an option or a setting. Went digging and sure enough… On the phone, go into Settings | Videos and Photos | Upload HD to force the mobile app to upload your actual photos rather than compressed versions.