I think they are wrong. I think there is no such thing like creepy Friday the 13th.
Here comes the proof. I managed to arrive in one piece in HK in spite of flying from Dubai to Bangkok, and then further to HK on Friday, October 13th, 2006. I even consider myself lucky because in all flights, nobody sat next to me :-) Furthermore, I got to see a bunch of new movies on flight which I didn’t manage to see in the cinema before like The Devil Wears Prada, The Break Up, X-Men III and The Lake House. Not to mention those short episodes of The Simpsons, Friends and King of Queens in between. It was totally cool! :-)
So guys, it’s absolutely okay to do things on Friday the 13th. Believe me!