Sales were robust on Cyber Monday, as retailers dangled free shipping and other offers in front of bargain-hungry consumers.

RESTON, Va., Nov. 5 /PRNewswire-FirstCall/ -- comScore, Inc. (Nasdaq: SCOR), a leader in measuring the digital world, today released its Q3 2009 retail e-commerce sales estimates, which showed that U.S. online retail spending totaled $29.6 billion, down 2 percent versus year ago.

comScore Chairman Gian Fulgoni to Present Update on Q1 2009 E-Commerce Trends in Upcoming Webinar RESTON, Va., May 7 /PRNewswire-FirstCall/ -- comScore, Inc.

CHICAGO _ If the Internet is so measurable, as one hears over and over from advertisers flocking to the Web, how come we keep getting new metrics to help us count? Ask the question to some people in the business _ "How measurable is the Internet, really?" _ and you hear a laugh.

By Janet Kornblum The revolution was not televised; it was blasted all over the Internet. Social networks, led by MySpace, became mainstream this year; millions joined the ranks of bloggers, and citizens learned to use cameras and Web tools to become watchdogs.