I'd like to know if anyone has USED Google Adwords - and if so - WAS IT WORTH IT?

Did you see a significant INCREASE to your conversions (people signing up through your affiliate links?)

I'm considering dumping 500.00 bucks into Google adwords - but want to know if there is any benefit to it.

I'm ranking high in Google for Keywords - however - I NEED MORE TRAFFIC.

I'm at the point in my life - where I need to make some serious money monthly.

So - please any suggestions would be awesome.