How do you test different ad copy?

[sniffer]

Hi

I read another contributor mention that they "rotated" ads to find the most profitable ad copy. How do you do this? I thought of pausing one ad and starting another, but wouldnt that affect the 'history' of the ad negatively? This is my main concern, really...

[eWhisper]

Here are my favorite two threads on the subject:

[webmasterworld.com...]
[webmasterworld.com...]

[sniffer]

Thankyou eWhisper