Best FOSS alternative for skype?

[Joe Zeff]

On 05/11/2011 05:19 AM, Patrick O'Callaghan wrote:
> Actually there are, notably SIP. However one is reminded of Andy
> Tanenbaum's well-known remark: "The good thing about standards is that
> if you don't like one of them, you can just use a different one".

And, as somebody else (I don't know who.) pointed out, "Microsoft 
follows standards like migrating salmon follow caribou."