"Mike O'Sullivan" skrev i meddelandet
...
and no, it's not april 1st

http://news.bbc.co.uk/2/hi/business/7914542.stm

Correct, it's not April 1, but it's big free advertising for the airline.
That "news" seem to be broadcasted almost everywhere and Mr. O Leary isn't
paying a cent when his airline is mentioned.
And maybe , next month they'll announce they've changed their month thus
receiving more ad.