I recently discovered Opera Mini, and now routinely browse the web not on my notebook, but on my cell phone, a Sony Ericsson K750i.
(For those of you who haven't yet tried Opera Mini, it's a Java-based web browser for cell phones, using Opera's Small Screen Rendering. The pages themselves are rendered on Opera's server, and are then transmitted to the cell phone in a highly efficient, binary format.)
Opera Mini is obviously revolutionary, in that it allows cell phone users to have a full web experience, without having to resort to specially designed sites. It's further proof that a "mobile web" is clearly redundant, and that cell phones (and other "small devices") can be first-class citizens on the Internet.
You claim that Opera Mini will remain free. Yet I would be surprised if you didn't intend to make money off Opera Mini somehow. To the extent that you are at liberty to disclose such details, are you negotiating with handset makers, to have this technology included in cell phones? Are you planning on supplying the web browser for most cell phones in the future, replacing the abysmal software that is currently bundled?