Stop me if you've heard this before:
An interesting fact about October 2010. This October has 5 Fridays 5 Saturdays and 5 Sundays all in one month. This happens once in every 823 years. These are money bags. Paste it on your status and money will appear in 4 days. Based on Chinese fengshui. Whoever stops this will experience none. its worth a try!
Deja vu? The same hokum went around a couple of months ago, except that version said: "This August has 5 Sundays, 5 Mondays, 5 Tuesdays, all in one month. This happens once in every 823 years."
(UPDATE: There's a new version circulating for October 2011, which starts on a Saturday.)
Fact: In any 31-day month, whatever days of the week the 1st, 2nd, and 3rd fall on will occur a total of five times. If a month starts with Friday-Saturday-Sunday, it will have a total of 5 Fridays, 5 Saturdays, and 5 Sundays. If it starts with Sunday-Monday-Tuesday, it will have a total of 5 Sundays, 5 Mondays, and 5 Tuesdays. And so on.
Fact: The phenomenon is neither mysterious nor rare. It occurs far more frequently than "once every 823 years." We only have to wait till next summer, in fact, for another month with 5 Fridays, 5 Saturdays, and 5 Sundays to occur: July 2011.
Fact: Posting dumb hoaxes as your Facebook status will not cause money to magically appear.
Helpful hint: What Is a Chain Letter?