Denis O'Brien and Facebook

Sir, – James Morrissey (Letters, November 11th) states that he represents Denis O'Brien. Anyone associated with a business person who was involved in the newspaper business should know that requests for information on advertisement revenue could be countered with "commercially sensitive information".

I note that he did not refute Cantillon’s figures. Now if The Irish Times were to have an end-of-year award for Thin Skin of The Year, I would like to nominate Mr O’Brien and Mr Morrissey.

– Yours, etc,

SEAN O’BYRNE,

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Sallins, Co Kildare