soZiety, the language-learning social network based on, a great, dead simple method you can use to have fun learning a language while you meet new people and earn some money. Simply: 1. download Skype, a little piece of software that allows you to mak
D. Millen, and J. Patterson. CHI Extended Abstracts, page 720-721. ACM, (2003)http://doi.acm.org/10.1145/765891.765950 . isbn 1-58113-637-4 .
http://dblp.uni-trier.de/db/conf/chi/chi2003a.html#MillenP03.