63 Intresting.
Alot of these free programs/software are built with traffic generation in mind, a percentage of folk will fill in thier email addresses giving the owner of the site a large database of people to promote various internet marketing/business/webmaster stuff too. And its not classed as spam as you gave over your email address. I do it too on a smaller scale.
Create a free "cool" program, spread the word via forums, twitter, facebook, other social networks, popular blogs etc creating a social "buzz". Internet marketers and webmasters go crazy for this kinda things.
Depending on how old this site is, the info that it gives is probably not as important now as google is constantly changing. Specialy recently!!

Tony