Hi there, thanks to GSX-R for pointing me in this direction.
I heard from roly this morning and have implemented, tested and rolled out the new features (checking of nofollow in both anchor tags and meta tags). The script already checks for links hidden in html comments too.
Please allow me to introduce my script now
What the script does in a nutshell:
You maintain a list of all your sites that you currently trade hardlinks on.
Then, each time you do a link trade with another webmaster, you enter the details, their site(s), anchor text, trader name and then forget it.
The script will then periodically check that the links remain up. If it finds that a link is missing, it will email you with the reason. It tells you whether the site was inaccessible (eg, network outage), no links were found on the site (eg, server error) or your link was missing (eg, dropped or forgotten?), or whether NOFOLLOW attributes were assigned to your link or the page META data.
You can call up reports by webmaster and your site to remind you of where your links are.
The script has been praised for ease of use, simplicity was the key when I developed this.
It can handle ANY type of trade (AB, ABC, ABCD, AB CD... zyx whatever you like).
You can store bought and sold links on it.
Read more testimonials at my site www dot adult-webmaster dot org
The script is simple to install, just requires you setting up a MySQL database, and setting up a single cron job (or getting your host to do it of course).
Price is $30. Installation is an optional $10 if you require it.
The script homepage itself is www dot adult-webmaster dot org/linkchecker/
The zip file includes an html user guide as well to help you get started.
I hope you find my script useful, please use the contact form on my site if you have any questions or to order the script.