Related Clues:

• Modern source of pass-along jokes
• Virus carrier, at times
• CNN format
• AOL notes
• Netzero.com service
• Letter on a screen
• AOL delivery
• Worthy starter
• Kind of address with @ in it
• Help for the lost
• Computer messages
• Something you didn't know
• Send on an impulse?
• 'Net letters
• MSNBC offering