Web 2.0 users spent about $27 billion online in the United States in the second quarter of 2007, according to comScore’s report.

• Social networking site traffic rose 33% to 81 million unique visitors in August 2007 versus August 2006
• Blog traffic grew 23% to 28 million unique visitors
• Online video site traffic increased 20% to 93 million
Social networking together with another Web 2.0 tools present tremendous opportunity for online retailers.