Jan Oscar, check out Docs post 615 which i have copied, maybe the same thing or something similar, it was not my end, maybe what you and Doc are seeing is connected.
For me personallly, this is not a problem because I trust the site you are posting on, but I think you are missing out on a few viewers that choose not to continue to the imagehippo site. This is the warning I get, but I have have of course checked the box never to show again, so no worries for me. Just wanted to get you as heads up for the ones not brave enough to check that box and leave instead.
If peeps are keeping up with this Thread, they too will see the site i am using is legit and ok based on previous posts concerning something similar, and from replies here right now.
Plus imghippo has a great advantage over my previous Postimages site, in that the resolution of the posted image is much higher, so allows peeps who would like to use my AI Art as Wallpapers, the opportunity to do so, which in turn saves me from putting them up in the Wallpaper section, a two for one if you like.