I Skype whenever I can!

The Mac version is better than the PC versions, so there is that problem when you try to talk with a PC user and there are echos, etc. But calling off-network, to a regular phone anywhere in the world, is wonderfully cheap (2c a minute), and Mac-Mac conversations are unparalleled, better than you get on landlines.

We still need conference initiating ability, which is available to PC users but not to Mac users. This is a major requirement still pending.

A better directory is also in order.

But overall, this is the VoIP for Mac users to get!