Sightspeed.com is a cross platform video conference service that offers instant messaging (IM) and Voice Over Internet Protocol (VOIP).
Note: At my last check, the Sightspeed.com website was not active, so this product may now be obsolete.
When you talk on the landline telephone it is analog transmission.
How VOIP works is it takes your voice in analog form and transfers it into digital form.
This allows your voice to travel through the computer lines to its destination.
After it gets to its destination, it transfers back to the analog form in order for your recipient to understand you. This is similar to how Skype works.
By this method, you can be able to send one person a message or send several people messages at the same time depending on how you messaging system is set up.
This company eventually became a subsidiary of Logitech after it was bought for 30 million dollars. As a result Sightspeed.com became one of Logitech's services.
Sightspeed.com offered a 30 day free trial with an option to purchase a monthly or yearly plan.
Sightspeed has Personal User Support as well as Business User Support.