[pepijndevos]

This is very sad to hear. One particular piece of Yahoo groups that I particularly care about is the LTSpice group, which contained a lot of simulation models I've not been able to find anywhere else. Luckily, this particular one seems to have been migrated to https://groups.io/g/LTspice

[Diagon]

Someone else mentioned that group on this thread. A group member. Scroll to the second page. He mentioned it along with a number of other groups worth archiving.