Today after removing old insecure advertisements and the Steam widget we see the site is working fine with HTTPS. We have contacted all advertisers about the problem..
The social network plugin we use now works much better and it can manage with all social networks needed.
Google Chrome will identify quickly which assets are not secure. The icon on the left side of the address bar shows secure but many sites will show the small i icon showing its mixed or not secure.
Amazon was early to adopt HTTPS which works with older insecure sites fine. Other affiliates have fallen behind the curve.
Google wants more security but the cost involved is more than many can afford. Servers have to be reconfigured and upgraded and more. The change can be very disruptive.
We have continued to select secure advertisements for the site which unfortunately are not widely available.