%0 Journal Article %K e-learning %K Ontologies %K Social %K Blog %K Wikis %B International Journal of Interactive Multimedia and Artificial Intelligence %D 2015 %N Special Issue on Digital Economy %P 17-25 %R 10.9781/ijimai.2015.322 %T The Digital Economy: Social Interaction Technologies – an Overview %U http://www.ijimai.org/journal/sites/default/files/files/2015/02/ijimai20143_2_2_pdf_12490.pdf %V 3 %8 03/2015