I personally like freebies. Even thou, there are sometimes hidden reasons to provide free services to the general public, as far as you understand the possible consequences, you can manage them successfully. I want to offer for your review a small list of the phone-related free online service, that include free phone calls, voicemail, and conference calls.

The WebList is hosted by RateItAll:

Enjoy this release, and add the entries I might be missing.