Am I allowed to have a keyword level url serve up different landing pages, that is, having my web site do the actual rotation. I am worried about whether this is against the adwords rules since Quality Score is based on the landing page and the Google robot would not see all combinations that can be served by a single keyword url.
Thank you.
I think Google understands the need to test plus if you needed to have a different ad with a different url for everything you tested (especially if you use multivariate testing) you would need dozens of different ads.