sabt-pestnu (967671) writes "According to Eugene Volokh, the Raw Story article has got it backwards. According to Westlaw, the cited statute dates back to 1951, when a lot of anti-Communist statutes were being enacted nationwide. What brought Raw Story's attention to it may be that South Carolina is once again trying to repeal it.
For those that got lathered about the original slashdot article, an archaic case (Yates vs United States, 354 U.S. 298 (1957) took most of the teeth out of such laws."
Link to Original Source