Yahoo has bought del.icio.us bookmarks organizer, one of the most emblematic of Web 2.0 and continuing its strategy of acquiring social skills and providing tangible critical mass, which began with Upcomming, followed Dialpad (Internet telephony) and Flickr (photo sharing application for digital), and the great B2B e-commerce portal Alibaba China.

“Technorati is this?. Clearly, these moves are motivated by a strong interest to improve and be closer to the user and the most dynamic area of Internet by these large companies in the network. The blog Appraisal and Learning Technologies is right to say that if this trend continues it is likely that soon almost all Internet services will be controlled by Microsoft, Yahoo and Google.