Looks like Flickr is pushing Pro accounts....”The above changes mean that for free accounts, photos over the 50 non-public photo limit or any moderate or restricted photos will be at risk of deletion.”
This is going to go over well ... I mean, I have pro so can post links to my stores, but....
Same, but I know a lot of people don’t. 
This seems extreme. Imagine if YouTube did this for YouTubers with less than 100K subscribers. Harsh! I will be checking my flickr this weekend then.
i don't have a single non-public photo.. up until recently i did not even know that's possible lol