Hi Wizard, I'm sorry this happened to your Flickr. Clearly you should not change anything about the pictures you publish, they are beautiful and anyone will still be able to enjoy them, just with the annoying warning and the offer to "see the kittens" instead. I think Yahoo owns Flickr. They recently purchased Tumblr too. On Tumblr, a lot of the naturist blogs are being treated as porn blogs I've heard - I'm not sure what that means exactly but it is a change over there from what I've heard. Maybe things are changing for the worse on Flickr too.
As far as I understand it, your pictures will still be freely available to all, just with a warning page first asking if you want to continue on to your site. Where you will see beautiful waterfalls. And flowers. And family snapshots. And rock formations. And cloud studies. And Deep Creek images. And dogs. Oh the horror!