Bookmark syncing. Multifunction sidebar. Built-in e-mail, chat, Bittorrent clients. Predictive address bar. Fast. Low memory usage. Excellent standards support. Excellent security track record and features. Themes. Mouse gestures.
Lack of support by some sites. No extensions. Some instability in late release candidate.
The new version of Opera is faster, has better standards support and includes lots of unique browsing helpers, but some sites still dont play well on the Opera stage....
