Definition:  Rather than having to seek out information, subscribe to sources to have information automatically directed to you.

Tools:

• EventSeer: Agggregation service for Calls for Papers and academic events (Web-based, free)
• Google Alerts: Get email alerts when news, blog entries, web pages, and/or videos appear matching search terms you have specified.
• Google Reader (Web-based, free)
• Journal alerting services
• Yahoo news & blog search