Many will, no doubt, opine that the spreading of such a rumor shows how gullible people can be and how much damage can be done through the Web's stunning immediacy.
Some, however, might consider that the greater sadness lies in the fact that people seem incapable of distinguishing not between rumor and fact, but between the Weekly World News and the National Enquirer.
Just because both are seen at supermarket checkouts doesn't mean both espouse the same principles of subterfuge.
The Weekly World News has long peddled tales of nonsense, such as the idea that George Clooney will run for president (he's not that silly), or that Michael Jackson faked his own death (he wasn't that devious).
The Enquirer, on the other hand, is the publication that revealed John Edwards' relationship with Rielle Hunter.
If people can't distinguish between these two similarly shaped publications, how can we expect them to distinguish between the rumor that Facebook is shutting down and the rumor that it's now worth $50 billion?