Giving something valuable away for free is always a good ploy to attract links and Wordtracker's free Keyword Research Guide does just that.
Wordtracker are experts in the field of keyword research, so this free ebook was always going to interest a lot of people.
Since publication, the guide has been linked to by numerous digital marketing sites (including SEO Book) and a whole host of different blogs.
Wordtracker's free Keyword Research Guide
