I also want to add I am now making use of Heatmaps. I am currently using the service Heatmap.me (which is currently a startup company as of this writing) and since I am a student at a university I get the $100 a month service for free. For those who do not know what a heatmap is, it is a visual representation of where users click on the website. The more users that click a certain spot, the “hotter” (or brighter) a certain spot gets). It is helpful to learn the best place to position things I want users to click on.
I do plan on making use of the Do Not Track header, but since I cannot see if anyone actually visits my site unless they either write a comment or share it in some way (or email me to tell me), then I will still track you even with that header. However, I may end up filtering out any identifying data that could be used to identify you, uniquely. I will most likely do this by using the data layer (which is what I use to get your IP Address) to push whether or not you want to be tracked and then setup filters to take out the IP Address from the data I collect. Github may or may not end up creating an analytics panel for those of us hosted with them. They are still deciding on whether or not to do it (at the time of this writing).
Last, but not least, I do not sell your data in any way. I only have to give it to Google and IPify because I use them to track you. They may sell this data, and most likely even data that I do not collect, but I don’t. I should also mention, Disqus gets your data too, and when you share on Facebook, Twitter, or anywhere else, they also get your data. I am not in control of what they do with it.