Well, since we all are trying to survive in this market.....no matter what real estate service we're providing, we all need to save money.  I've created a list of some free services that I've used and some I haven't used.

Constant Contact - Popular, user-friendly service that allows you to choose from many templates for e-newsletters and email campaigns or you can design your own with HTML. http://www.constantcontact.com

Free Conference Call - A free conference call service that allows up to 96 people on one call. There are other complimentary services available on the website, including call recording. http://www.freeconferencecall.com

VM Direct - Send video embedded in your emails or have live, streaming video on your website. VMDirect allows you to incorporate video to enhance your business practices. http://www.vmdirect.com

E-Fax - Send and receive faxes anywhere you have internet access - no fax machine needed.
http://www.efax.com 

Skype - A service that allows you to make and receive calls to ordinary phones on your computer. It is always free to talk with other Skype users, and rates are competitive for domestic and international calls.
http://www.skype.com