With instant messaging becoming as hotly competitive among the major portals as search advertising or e-mail hosting, YahooYahoo! Wednesday said it is testing an upgrade of its Messenger
instant-message service, which will give users the ability to make free worldwide voice calls. The upgrade integrates its existing voice feature--which currently allows users who are logged onto
Yahoo!'s PC Messenger to converse in real time and leave voice mail messages--with a call-history archive as well as free ringtones. -- G.O.
