صفحة ويب
TM: Total minutes is a metric being used by Nielsen/NetRatings to measure total time spent on a Web page rather than the number of Web page views. On July 10, 2007, Nielsen announced that they would be relying on TM as their primary metric for measuring Web page popularity, due to changes in the way Web pages provide content through audio and video streaming and by refreshing the same page without totally reloading it.