There are quite a few links in the network (148 when I'm writing this, mainly on Cross Validated, Mathematics and MathOverflow) to the Virtual Laboratories in Probability and Statistics hosted at
https://www.math.uah.edu/stat/ which contains material about probability and stochastics. The material is still available and is now called Random. Links like http://www.math.uah.edu/stat/expect/Spaces.html (from this randomly chosen post) redirect to Random's homepage, but it would be a lot better if visitors were directed to the page itself.
I have a script which can do this, but this time the substitution is so straightforward that the mass link updater tool can be used by staff members to fix them at once, without bumping the affected posts to the front page. All it needs to do is find
www.math.uah.edu/stat/ and replace it with