Facebook users are innocently sharing advice with their online friends about how women can avoid being kidnapped and raped, not realising that they are perpetuating a hoax.
Tens of thousands of Twitter users have been tricked into retweeting a message claiming that Twitter will donate $1 per retweet to a baby needing treatment for cancer.
Of course, it's a hoax.
Has 1980s pop star Adam Ant really been killed in a jet ski crash?
If you believe everything you read on Twitter and Facebook, you might think that it's true. Learn to be more skeptical, and don't trust everything you read on the net.
A message spreads on Facebook telling you how you can send a Christmas card to an anonymous American soldier - but all is not what it seems.
Almost 200,000 Facebook users have been duped into sharing and reposting a message about a 14 year old boy who was allegedly beaten badly by his stepfather after protecting his little sister from being raped.
A new hoax is spreading between Facebook users, in the mistaken belief that sharing a picture of a sick boy in intensive care will grant him a heart transplant.
A warning is being spread by Facebook users, worried that their friends may have caught a computer virus because their profile picture has gained a pink tinge.
Find out how a campaign to raise awareness and money to fight breast cancer turned into a computer virus scare.
Millions of BlackBerry owners around the world have been feeling the pain this week as messaging and email systems collapsed in a service outage.
Which is hardly the ideal time for a BlackBerry-related hoax to be spread.
Duped Facebook users are sharing a message with their online friends, believing it will help them avoid charges of between $3.99 and $9.99 per month.
Of course, the chain letter is completely bogus - and should not be forwarded.
Will Facebook start charging due to the new profile changes?
But don't let the truth get in the way of a good old-fashioned chain letter, spreading like billy-o across the social network.
A warning is spreading like wildfire on Facebook, claiming that hackers are posting pornographic movies on users' walls which are invisible to the owners of the wall but are visible to friends and family.
Facebook users are sending scary warnings to each other regarding a supposed new piece of malware spreading across the social network.
But is there really a piece of spyware hitting users, or is something else happening?
Facebook users are once again warning their online friends about a threat - the only problem this time is that it doesn't really exist.
Dressing-gown wearing octogenarian is not dead, despite internet rumours. In fact, he's lying in bed with his new Playmate girlfriend.
Do social networkers take enough care when rushing to find breaking news?
Some Facebook users have started posting a message on their walls, and encouraging their friends and family to do the same, claiming that Facebook will start charging this summer.
Shrek virus targets ugly people on dating website?
It sounds like an April Fool's joke, but it's not April 1st and the world's media seems to have fallen for it.
Warnings are being posted across Facebook, warning users to beware messages from friends that invite them to "Visit the New Facebook".
But is it a real threat, or a hoax?
Messages being shared across Facebook warn users not to add as a Facebook friend people called "Jason Allen" or "Amy Allen".
But in truth, it's a new hoax spreading like a chain letter across the social network.