People are having a bit of a field day with that, but how is it any different from any other paper which gives bonuses for stories which move subscriptions? Or simply the fact that a journalist's career progress is basically pegged to the importance of their stories?

It's a niche-specific metric for rewarding the same thing every publication does - reader interest. If a reader is interested in a financial article, pretty much by definition it will alter their market behaviour.

I actually agree, as with all journalism, that there is some incentive to write exaggerated articles. But it rarely causes respectable journalists to fabricate stories, and I can't see how this would be any different.