strider2004 writes to tell us that Barrapunto, a Spanish tech news site, has outed two TV stations in Spain, one public and the other private, for engaging in Wikipedia vandalism for the sake of a story. (The link is in Spanish; Google translation here.) The public station introduced falsehoods into the Wikipedia entry for John Lennon; the private one vandalized the Elvis Presley entry. Both stations said they were performing an "experiment" to check the reaction time of Wikipedia. Both articles were promptly corrected by other editors.
Update: 08/19 13:01 GMT by KD : Barrapunto is not affiliated with Slashdot.