plingm users can call for free, this is just clever marketing, it is like if skype (free skype to skype calls) lets you check if your facebook contacts are skyp

plingm users can call for free, this is just clever marketing, it is like if skype (free skype to skype calls) lets you check if your facebook contacts are skype users and then brags that facebook users can now call for free, seems legit :)