How many Wordpress TAGS should I add to a post?
I heard a rumor that for every tag you add, you create a duplicate post of your original, essentially filling your website with duplicate content. Is this true? Seems ridiculous because the number of indexed pages my website has does not include the tags, so obviously Google doesn't index the duplicates anyway right?

How many Wordpress tags should I add to a post? Is it bad to add over 100 tags to a post? Or does it just increase your chances of someone finding the post?

The information on Google regarding tags is very confusing and misleading, I was hoping a member of authority here could clear this up for me.