Nimbuzz has launched a premium calling service called NimbuzzOut that adds the ability to use the mobile messaging client to make calls to wireless and landline phones worldwide, as reported by Om over on GigaOM.
Om has been using the pre-release version of NimbuzzOut for about a month and recommends it for making cheap international calls — the call quality is good and the app is easy to use. Check out Om’s post for full details.
Have you tried NimbuzzOut? What do you think of the call quality?