SinclairUser - 3:47 pm on Apr 2, 2003 (gmt 0) I found it very effective.
I tried google's ad words and I found that there are so many variables that the best way to approach the ad campaign is to actually set one up. You can limit the amount you spend so you can run some pretty effective tests. I found that some of the lesser used keywords still brought a lot of traffic at a lower CPC.
I found it very effective.