Experts Exchange, basically if stackoverflow was quora. Can only see questions even when logged in and you’d have to pay a pretty penny to get access to any answer. Or you could collect enough points to access the answer you need by writing answers yourself (ridiculously many points, think weeks of answering).

Same for our student PCs - As soon as the setup includes network homes snap becomes completely unusable. Applications just crash on startup because snap doesn’t allow them to access the user’s home directory