frankly they all stink *sry just my opinion* but the first two won't do anything but keep users away. the thirid has a slight chance of working, then again I have a slight chance of being the daddy of britney's next baby (a chance that gets bigger by the day).
the problem with them is they are all a 'bright' background. not to mention they are all text. The bright background makes it dificult to see the text, and the multiple colors of texts makes it hard for the human mind to pay attention to it, now if they were flashing... well that's a different story.
try limiting your colors and adding some graphics.
for instance the red one claims that an ipod is a prize, so use an ipod image. that adds structure to the banner instead of just two lines of text, structure keeps users attention while lines of text tends to bore them.