LinkedIn is cutting down the number of emails it sends. The professional network said that it is cutting down based on user demand. "Many of you have told us that you receive too many emails from LinkedIn," explained the site's blog. "We’re also not immune to the late night talk show host jokes. We get it. And we’ve recently begun to make changes so that the emails you receive are more infrequent and more relevant." The site has removed four of every 10 emails sent.