NEP: Dissemination of new research through email and RSS

"NEP (New Economics Papers) is a free, email-based service that disseminates weekly new working papers appearing in RePEc, currently 300-500 a week. It has 85 different, field-specific mailing lists, each managed by a volunteer editor who determines which papers are relevant for his/her field, with the help of an expert system. So far, 150,000 papers have disseminated in about 30,000 reports, each paper being on average presented in two different reports. The subscriber base is close to 30,000 people, with over 60,000 subscriptions...."