The browser offers a "Turbo" service which makes websites load faster for users on a slow connection.
"When Opera Turbo is enabled, webpages are compressed via Opera's servers so that they use much less data than the originals. This means that there is less to download, so you can see your webpages more quickly," Opera explains.
But this feature does more than that. It also unblocks Pirate Bay for those who can't access it.