Wikis, Blogs, Bookmarking Tools - Mining the Web 2.0 Workshop. Edited by Bettina Berendt, Natalie Glance and Andreas Hotho. : Workshop at 18th Europ. Conf. on Machine Learning (ECML'08) / 11th Europ. Conf. on Principles and Practice of Knowledge Discovery in Databases (PKDD'08), 2008.