C/Net reports on a study by PRWeek and BM that says about 59 percent of CEOs surveyed said they find Web logs, or blogs, useful for internal communications, while 47 percent see blogs as tools for communication with external audiences. Of the 131 CEOs surveyed, seven percent are actually blogging while many others say are unlikely to start a blog themselves. About 18 percent of these CEOs say they plan to host a company blog over the next two years.