In todays El Reg.

"Opera Software has permanently dropped the inclusion of advertising banners in the free version of its PC browser software."

"Users more familiar with IE or Firefox will find a number of significant differences with Opera that may enhance their browsing experience. Opera's browser lets users start from where their last browsing session ended or to save their entire session. Integrated security features with the browser also put it ahead of the game in defending against phishing attacks."

Download version 8.50 here