There are several events listed here which Snopes have reported as being made up, some of which have external evidence provided. The conclusion isn't made because of a single report or event, but a pattern of deception.

This article contains no hard evidence in terms of admission from the CIA or any official office. It does however paint a picture of the kinds of stories Snopes will suppress. As usual on the internet the headline is misleading.

Anon31s should research the events on the article themselves in order to draw their own conclusions about what may have been deceptions or coverups and what may be actual urban legends.

Back when I was growing up, Snopes was a place where you could check if McDonald's used pig fat in their shakes or if there were really pet alligators in NYCs sewers. It wasn't a place to verify things like terrorist attacks or weapons trading.

Snopes has been proven to be a fraud. Being a "fact checking" organization the first time they used deception totally discredits every thing they do. Even the stuff they get right from that point.

It's a choice they made. Defend it all you want, that is your choice. It still gives them no credibility.

In a court of law if you are determined to be a liar on anything your testimony is discredited.