Number 1 Mistake when Tracking a Website
analytics
While this is basic written law, it amazes me just how many web developers are not excluding non targeted traffic from website statistics. Website statistics are absolutely crucial to the success of a website, they allow you to constantly monitor the performance and also allow you to make crucial business decisions. Therefor it is very important that your statistics are accurate, and show a true representation of your users.
An example is if you have a web developer who manages your website, you will be amazed by how much time they spend using and navigating it. If they fail to block their own IP addresses and exclude their traffic, all their activity will show in your reports, and will skew the results. The same applies to your staff and even your own usage. Your staff and yourself do not act and behave like normal users do on the website, and so having this show in your reports is bad and will come back to hurt you.

