Why do you need to add counter on your site? If you don't know why, read this article. 1. How much visitors do you have? If you have site, you have to know how much unique visitors and how much visits you have. Why? If you have small amount of unique visitors and a lot of visits , you have to promote your site and get more visitors. Why? That means, every unique visitor look to more pages on website. You have great content, but your site is not promote enough. If you have a lot of unique visitors and small amount of visits, you have to do somethink on content. A lot of visitors come on your site, but it is boring/unuseful and leave page. 2. How do visitors come on my site? This is very important information. Example: a lot of visitors come from MySpace and you have just 100 'friends' on your account. You have to add more 'friends' and you will get a lot more traffic. 3. Where are visitors come from? Very important information for affiliates programes. If a lot of your visitors come from Germany, add affiliates programes for german shops and you will earn more. Witch statistic service can I use? I use StatCounter.com, because it is free, have invisible counter and give me all information, witch I need. Source: Internet marketing blog