Perseus Development Corp., a survey-software developer company in Braintree, Mass, expects the “blogosphere” to exceed 5 million users by the end of this year and 10 million by the end of 2004. Part of that growth comes from companies that use blogs to cut down on e-mails, faxes, and phone calls. … I haven’t seen any reduction in phone calls because of emails neither do I expect any decrease in phone calls and emails because of weblogs. People are using all these modes of communication for different purposes. It seems like people are exaggerating importance of one technology over the other without going into their respective merits. Has the importance of face-to-face communication come down because of emails and mobile phones?