Are Expired Domains Still a Goldmine?

Expired domains can still work, yes, but they are not the quick easy cheat they were before. You usually get the best outcomes from domains that have a clean past, relevant inbound links, and matching topic relevance. Just rebuilding a website and then dropping in some links, is almost never enough. Google is now very good at spotting low-quality re use. A carefully selected expired domain can still give you some benefit, however content quality and the wider trust of the whole site matter far more now.