I had a friend who did street ministry. Kevin heard every possible story from someone wanting help that you can imagine. His rule was simple - verify, verify, verify. If the story was true, then he helped.
Verify, verify, verify is a good rule for the Internet too. Whenever I get those chain e-mails, I always check them out and then send an e-mail to the sender telling them the truth.
Unfortunately, I haven't been quite as careful about youtube videos etc... evidently the Wii Wii post below was an April Fools joke. Still funny but not real... so if you were planning to purchase Super Pii Pii Brothers, you'll have to wait for someone else to release it.