The network accelerates interpersonal communications, but it also widens rumor circulation with high efficiency. Like genes, rumors are, based on the theory of meme, spread from person to person by imitation, variation, competition, selection, and retention. Taking the nationwide news of Hung Chung-chiu case, this study is to examine the circulation of rumors online and tends to discover the communication pattern in terms of receiving, revising, and resending Hong-related information by applying and extending the theory of meme to the internet. Findings from the empirical survey indicate that respondents admit it is hard to effectively distinguish between rumors and news even after they evaluated the credibility of received information. Also, the network enhances online behavior in coping, varying, selecting, disseminating information and greatly facilitating the spread of the rumors, given its characteristic of respond-easy with completing friendly.