I like the counter for its simplicity and ease. I can configure almost everything from the administration, and only needed to change a few things in a Spanish translation to look fine for the site. I have a couple of problems: every time I hit reload, the counter keeps adding a visitor, and the number of visitors is always too high for the site, like over a 100. I don't know if it is a problem with the counter, or something else, but beyond that, the module is very useful and well written.
Thank you for the review. If you have a problem, please contact me in the support forum!