 In one project, Lackaff and Halavais explored Wikipedia's topical coverage using the Library of Congress Classification to compare Wikipedia's coverage with that of Books in Print.Halavais was an early proponent of hyperlink analysis and webometrics, and has examined the relationship between national borders and hyperlinks, as well as hyperlinks between US cities.With Maria Garrido, he also looked at the linking patterns among global NGOs and grassroots organizations.