How many of the clicks generated by adwords do you think come from other host just wasting your money. I seem to get quite a few of clicks with people staying on the site for 3 seconds and leaving and they all seem to use mozilla<- not that this means they are other host but i see alot of the traffic that actually orders or at least moves around on the site are not using mozilla.

Usually the people hitting my site with mozilla browser stay for 3 seconds and leave.

Just curious to see what you experience has been with this.