SeagullinKent posts a tip. We all have the free will to follow that tip or not - unless Pevensea and SeagullinKent are the same person (you may know something I don't here!) blaming somebody else for one's own blind faith in a tip is fatuous in the extreme.
There's a big difference between a 'Tip' and someone thinking a horse will win. A Tip generally involves inside knowledge (to an extent), and the latter is more based on being able to read form.
I managed to avoid this one - as it didn't seem like a 'tip' to me.