Kim Dotcom's 'splash page' for his new file sharing website overloaded late yesterday, due to excess demand.

The Megaupload founder, currently fighting extradition charges of internet piracy and fraud to the U.S., launched his new site after being shutdown in January.

But within minutes of going live the site overloaded, forcing Dotcom to take to Twitter, telling his followers:

"You crazy Mega fans haha…."

Dotcom couldn't resist having a dig at U.S. government officials also, adding:

"All FBI agents pressing reload hahaha..... We see their IP addresses. LOL!!!''

Megaupload's follow-on, called Mega, gives users direct control and responsibility over their files according to Dotcom, with the site expected to launch in January 2013.

Users of the new site can upload, store and share photos, text files, music and films, encrypt those files and grant access using unique decryption keys.

"You hold the keys to what you store in the cloud, not us," Mega says.

But as Dotcom battle with the U.S. continues, the new site will not use American-based hosting companies as partners to avoid being closed down by U.S. authorities.

"The new Mega will not be threatened by US prosecutors," Dotcom said.

"The new Mega avoids any dealings with US hosters, US domains and US backbone providers and has changed the way it operates to avoid another takedown."