baseball cards
Think about the magazine section in your local supermarket. If you reach out with your eyes closed and grab the first magazine you touch, you are about as likely to get a baseball cards tabloid as you are a respected baseball cards journal.
Now imagine that your supermarket is so accommodating that they allow anyone who has an opinion on baseball cards, well informed or otherwise, to just stack their baseball cards articles, magazines or books in the store. Now if you reach out at random you are highly likely to get junk information on baseball cards and lots of it.
