My Employer is a thief

WE'RE TAKING GPL CODE AND WE'RE SELLING IT WITHOUT GIVING AWAY SOURCE CODE.
I WORK FOR A POPULAR P2P VOIP COMPANY.

| The difference is that BSD provides you with one additional freedom: the freedom to restrict the freedom of your users.
The BSD license makes no such restriction. Your users are free to do whatever they want with what they've received. The GPL imposes additional restraints onto your users. That's restricting your freedom.

Freedom is the absence of restraints.