I strongly believe in replicability of science and I tend to release all the datasets I work on for other people use, improvement and testing. This is what I’ve done when I was working on trust metrics and recommender systems (see the datasets I released on Trustlet.org time ago) and this is also what I do with the SoNet group now that we explore the social side of Wikipedia (see the datasets at http://sonetlab.fbk.eu/data/: they are social network extracted from User talk pages, data about activity patterns on Wikipedia pages, and also about social capital (not on Wikipedia)). Enjoy!