Please don't rush into any assumptions.The version code is a measure for us to monitor piracy through a simple mechanism.IT IS IMPORTANT TO UNDERSTAND that this link has a "
display:none;" CSS property so that
Google will ignore it (per Google's crawling policies), yet we can use it for our legitimate tracking purposes without interfering with our customers SEO etc.
That means Google and other search engines DO NOT TAKE IT into account.
To further strengthen this, we also plan to do an update soon to v1.7.3 adding a rel="nofollow" attribute to the link or perhaps removing the link entirely, yet keeping the version numbering.
Let me also remind you that other extension developers follow this path, to stay away from encryption, e.g. Azrul's Jom Comment. Check for example this site using Jom Comment:
http://www.compassdesigns.net/joomla-blog/Do-You-Have-a-Refund-Policy.html...and look for the hidden link in the source code back to azrul.com.
Although we do not recommend removing this (hidden from Google and other search engines) link, we can't stop you from doing so, cause anyone has their reasons. For your information, to remove the link simply look for an echo $crd at the bottom of the main module file and comment it out.
We really have enough hard time dealing with piracy and we do not want to start using ioncube encryption. I hope you understand. We value our customers and their privacy.
Regards,
Fotis
JoomlaWorks