Think on this. The Internet, for better or worse, has the sum of human knowledge. Know lets say that we develop the technology that allows us to integrate the whole of human knowledge in a single human brain. Sure, its not omnipotence but it would be damn close to it.
Also who says that God is omnipotent? If you have been around 14 Billion years or so, you would have a great deal of knowledge so it just seems you would be omnipotent, especially compared to a species that has only been around for a 100,000 years or so.