Andreas Kaltenbrunner Vicenç Gómez Vicente López Description and Prediction of Slashdot Activity. 57-66 2007 LA-WEB http://doi.ieeecomputersociety.org/10.1109/LA-WEB.2007.59 conf/la-web/2007 db/conf/la-web/la-web2007.html#KaltenbrunnerGL07