It is dangerous to attempt this because a dybbuk can travel over the Internet and enter the body of the exorcist.;>)
Rav Batzri apparently had a bad connection or a version of Skype that was not dybbuk-enabled. His remote exorcism failed (video).
He tried again locally to exorcise this dybbuk in Jerusalem (video) . He fears for his life.
Other rabbis are disavowing this whole process.
Welcome to the carnival known as Haredi Judaism in 2010.