eFax is offering a 30 day free trial on their eFax Plus service. Receive up to 130 fax pages and send up to 30 fax pages free.

eFax Plus free trial sign up instructions:

• Click the eFax Plus free trial banner above.
• Click on Fax Free Now.
• Enter your zip code and choose area code.
• Choose a fax number and fill out the account information.
• Follow instructions to sign up.
• Start faxing!
  

eFax Plus service details:

• eFax provides you with your own unique fax number. Local numbers are available in many areas. Toll free numbers are also availble.
• Send and receive faxes via email.
• Use your cell phone or PDA to access faxes from anywhere.