If you are keen at knowing what keywords your visitors use to visit your site then Whoisranking is your tool for the job. Signup for the service, get your own widget to show those words and get a hook on potential advertisers. This can be helpful in letting you make most of communicating with them and setting up rates and conditions. Works neatly, without odd features that only slow your work down, place it on your homepage to share with your visitors to get SERP on their sites as well. I prefer the app for the ease with which it can be used.
