Free VOIP

So I've been browsing through a seemingly endless Google search of "Free VOIP."
Even though I've mainly been looking for new Skype tricks (5min call through Free411 is all I can come up with and Gizmo has been taken over by Google) I'll take anything as I'm currently to broke and cheap to buy a cell phone. (Btw, I know about EvaPhone and if anyone can provide a review of it I'd be grateful) Please, nothing about surveys and all that junk unless it's not one of the ad ones (ad surveys: prizerebel, ect...)

I use Skype.

Some people pay like, $10/month for it.

Skype and (1800Free411) gets me 5min calls but sometimes the lines are busy and then it's only 5min. I know you can get Skype credit but that costs $$ which as previously stated I don't have. My whole thing is a way to either get free Skype Credit or another VOIP that does free calling.