Here are the new features in Opera 9:
You don't need a separate BitTorrent application to download large files. Simply click a torrent link and start the download.
Remove ads or images - it's up to you. Right-click (CTRL-click on the Mac) on the Web page and choose "Block content".
Add your favorite search engines
Right-click on the site's search field and select "Create search" from the menu.
It is easy to have many tabs open at once in Opera. But exactly which tab had that video you wanted? Hover your mouse on any tab to see a thumbnail preview.
Want to view a site in a different way or deny certain cookies? Want to block pop-ups on certain sites only? Right click and select "Edit site preferences".
Small Web applications (multimedia, newsfeeds, games and more) that make your desktop experience more fun. Use the Widgets menu to discover new widgets and access your favorites. Visit widgets.opera.com to learn more.
Improved rich text editing
Use advanced text editing features for today's most popular Web applications.