Isn't using the trial version all the time morally the same as using a pirate version? You're still using their work (and that's a LOT of work) without paying the price for it - it makes no difference to them whether you have to wait 10 seconds before the game starts.
In a list of programs with the best value for money, WHDload would be top, I reckon.
Isn't whdload piracy anyway, since the authors of the games don't get any money, do they?