Received Pins but...

[3happydancers]

how can you tell? I've tried and some looked questionable so I looked on pinpics/dizpins-Counterfit Pins section and found pictures of at least half of the pins I received. Does this mean they are fake, or are the pictures a warning that I should look at these particular pins more closely?

I honestly tried using the guidelines to help spot scrappers but I guess I am too new at this.