Read here.
Here is a national chess federation that openly accuses its players (including a GM and an IM) of cheating during the Olympiad. I sure hope they have proof on such matters, or else they may be slapped with a case of libel. Oh, in that case, I might even be implicated for "promoting" this story.
On another note, I was just curious about some accusations with regards to PICA and match-fixing. I wonder if PICA is able to sue someone for blatantly accusing them for match-fixing when he is unable to prove it, given there is no crosstable.
Yet, he is allowed to accuse people openly without proof. I believe it is the accuser that has to furnish the proof of guilt, rather than the accused to show proof of innocence. Perhaps this could be slander/libel as well?
Food for thought.