This article describes research into measuring the business value of various Web 2.0 technologies like wikis, blogs, podcasts, and social networks. Interviews, observations, and surveys of companies found that these technologies can help improve collaboration and communication. Wikis, blogs, and RSS filters appeared to have the greatest impact in these areas. However, companies remain cautious about deploying many of these technologies and further research is needed to fully understand their impacts. Assessment of real impacts over time across multiple business areas can help organizations determine which technologies provide the most benefit.