I am here at SMX Stockholm, went to the internetmarketingninjas.com site and fot this: “We are no longer offering the Internet Marketing Ninjas program“. The Ninjas are used by many for Link-building research but they are now closed. I tried to look into it but I could not find out why, so if you know pls. post.
Other tools that are still open for those that used to have Marketing Ninjas as their tool, are SEOmoz, Yahoo! Site Explorer and MAjestic SEO to mention some.