Surveys offer an effective way to measure the impact and the quality of formal communication. In some cases, a survey about a project newsletter may prompt stakeholders to read a newsletter for the first time. Project managers can also use surveys to uncover the preferred communication styles of stakeholders. For example, if an e-mail newsletter enjoys more readers than a more frequently updated weblog, a project manager may elect to merge the two outlets and emphasize the newsletter. On the other hand, the opposite feedback might cause a project manager to put resources into the blog and to automate the regular newsletter by using blog entries as content.