Adam. The links are created by Flickr's App. I wasn't aware of any case sensitivity in hyperlinks but, to be honest, something I've never had to consider.The current Flickr app has been reengineered recently (I think because of the need to age check in the UK and elsewhere). It has a number of bugs in it that I've provided information to Flickr support about and I understand they're working on. So it's possible results may be unpredictable at present!
Michael Ixer ● 45m