Heard this one:
"The P.O. will DESTROY all remaining African American Heritage stamps at the end of the month instead of following their usual procedure of selling them"
This internet urban legend dates back to 2000, stating that the US Post Office will stop selling stamps depicting black American heroes and leaders and destroy the remaining in possession. The Post Office has made several official statements indicating that it has no intention of taking such actions against the Black Heritage Stamp series. On the contrary, on January 8, 2007 it issued its 26th consecutive stamp commemorating Supreme Court Justice Thurgood Marshall.