Abstract
This paper studies the information propagation on ""blogosphere"" and emergence of massive information propagation. We examine the following process. 1) collecting data in blog entries from the WWW. 2) making an information propagation network. 3) counting the number of information copies on the topics. By analyzing these experimental results, we discovered emergence of massive information propagation in terms of the number of the information copies. In order to evaluate the obtained results, we modeled information propagation process as a percolation one in a complex network topology. Simulation results show a scale-free topology is essential to model the information propagation.