The interface is very easy to use and it's very configurable. I like that you can create all types of campaigns (i.e. CPA, CPC, etc.). You can also set rules for each type of campaign (i.e. only show certain keywords). There are some things that could be improved such as having more options when assigning keywords and campaigns. For example, if you have a keyword assigned to multiple campaigns, there is no way to separate them. This would be great to use if you want to see what percentage of traffic is coming from each campaign. We're able to target specific people and get them to buy our product/service.