Why web 2.0 is good for learning and for research: principles and prototypes.

Carsten Ullrich Kerstin Borau Heng Luo Xiaohong Tan Liping Shen Ruimin Shen Why web 2.0 is good for learning and for research: principles and prototypes. 705-714 2008 WWW http://doi.acm.org/10.1145/1367497.1367593 conf/www/2008 db/conf/www/www2008.html#UllrichBLTSS08