They do work, sometimes the results can be significant. McAfee does an A/B test as part of the sales process. http://www.mcafee.com/us/mcafeesecure/resources/r

They do work, sometimes the results can be significant. McAfee does an A/B test as part of the sales process. http://www.mcafee.com/us/mcafeesecure/resources/results.html http://www.mcafee.com/us/mcafeesecure/resources/results.html Everything I've seen points to these logos having a noticeable impact, consumers do look for them. It's an important thing to learn for tech people: you are not your customer.