Hoe beinvloed online advertising word-of-mouth?
http://www.doubleclick.com/us/knowledge_central/documents/RESEARCH/dc_influencers_0612.pdf
http://www.competeinc.com/research/spark/
http://www.competeinc.com.edgesuite.net/med/uploads/files/Compete_Spark_12_06_Embracing_Consumer_Buzz_Creates_Measurement_Challenges.pdf
Via
http://i-wisdom.typepad.com/