I like that it allows me to negotiate with other ad agencies about which ads my clients will see when they log into their account at work or from home via mobile devices (tablets/phones). The process of creating an advertiser profile can be confusing - you have create your own logo but then are not sure how this reflects in what's shown up next time someone logs onto mass exchange! We've been able solve our creative issues by using multiple creatives within one budget allocation so we don't waste money paying too much per impression if no-one likes them as well!! The ease of use and the ability to use it with other applications. It's a great tool for the advertising industry. The interface is not the best, but it's easy to use. I don't think there's much to dislike, but I wish the interface was a little more user friendly. I have used Mass Exchange to negotiate ad rates for clients. It's a great tool to use with other applications. It's easy to use and the rates are very competitive.