It may seem an innocent I can do without it option at first, but it is a feature that will leave you thinking that the Opera folks have reinvented the browser. With Netscape or IE, you are a slave to the back button. This is a vastly superior system to either of the free browsers. It is highly addictive once used. It is perfect for doing a search engine searches and shift-clicking your way through the results without having to leave the results page.
Opera is the most configurable browser on the market.
Offering such advanced features such as the ability to kill animated gifs, turning off referral logging, and total control over graphics. It is the first browser to support the new security transport socket security layer. Opera has several power features that IE or NS don't have such as right clicking on a form widow lets you can insert personal information such as your name, email, homepage, address, or up to 12 other definable strings. Since Opera is from Norway, it is the first world available browser to default to 128bit encryption where it is not shackled by US export encryption laws. Transport socket security layer is thought by some to be hack proof.