Personal knowledge management (PKM) plays a very important role in improving individual's skills and ability. While web2.0 is centered in user experience, creating knowledge and two-ways communication, thus web2.0 concepts seem to be an ideal fit with Nonaka's SECI approach opening new doors for PKM systems. According to analyzing the PKM and characters of Web2.0, this paper integrates web2.0 into PKM, presents a new PKM model, and proposes the technology architecture of the model on the basis of illustrating the opportunity provided by web2.0 to PKM in the Perspective of Nonaka's SECI approac...