Blind Item: When a gossip columnist doesn't have enough evidence to support a claim about a celebrity, where naming said celebrity would result in a lawsuit, giving no names but mild clues to the celebrity's identity in the latest gossip. - Urban Dictionary
Brian Ausiello writes interesting blind items for EW.com (Entertainment Weekly). His latest, alleges that an original cast member of a current hit TV show has been fired - but doesn't know it yet. Judging from the comments, speculation seems to be that it's either Ketherine Heigl, David Caruso, or Hiro from Heroes.
Blind items are a lot of fun, so check it out.