Google AdWords has released a new tool for advertisers to enable them to easily test conversions on different landing pages and elements. The tool then shows advertisers the results, including graphs, allowing them to chose the best converting ad options for their campaigns. Advertisers interested in signing up for the beta can do that here: http://services.google.com/websiteoptimizer/.
I found your blog on google and read a few of your other posts. I just added you to my Google News Reader. Keep up the good work. Look forward to reading more from you in the future.