At first glance and use, this plugin offers a neat interface in which you can change the theme for the counter. There are lots of templates to choose from which makes this plugin very attractive, along with the basic settings it provides.
However, this plugin also was the culprit that created three particular unwanted 'extras':
2) It created a string of child directories inside the WP-CONTENT folder like this: wp-content/cache/hookd/DOMAINNAME.com, then inside that folder, contains two files: 8b8203326e2a9c70947a and index.html
3) Eventually if your header.php file is writable, it would add Viagra/Cialis or Loan or some other sort of unwanted advertisement into your web site upon first site-wide load. Those who have their browsers secured with anti-virus/anti-malware mods will most likely not see the ad, but for those who aren't protected will see it.
Summary: This plugin needs to be blacklisted and its author needs to be charged for fraud and privacy issues.