I use the number of stars as a measure for how much the guide is of use to people.

If it’s not useful to anyone then I know not to spend time on that. Short though as the guide is, and even though it is based on much hard work of others, it still took time to make, much in part because when I write stuff like this I spend a lot of time actually redoing steps to ensure to the best of my ability that what I am writing will work for others too. So I like to know that people find it useful.