One of my hobbies is Cuban cigars.
The Subreddit is the only place (that I could find) on the Internet where European and other foreign vendors are openly rated and discussed.
That is critical information when there are so many fakes out there.
Other cigar sites refuse to discuss it for fear of being sued or fear of attracting the attention of US Customs/law enforcement.
Excellent example. I mostly go to Reddit for movie stuff. It can be useful for that.