Some, including the arstechnica reviewer, have complained about the fact that the directional pad keys jump around from link to link instead of scrolling in the browser.

I too found this someplace between awkward and irratating. Fortunately, it is easy to fix.

Just edit /home/user/.opera/input.ini

Find the section called (Browser Wiget), and change "Navigate" to "Scroll" as desired.

Quit and restart the Browser.

I did them all, and now I must use the stylish to select links, but the browser scrolls more like I think it should.

If you would like, you could instead comment out the Zoom lines in the GTK Wiget section, and then add F7 and F8 (the +/-) buttons on the top to the Browser Wiget for scroll down and scroll up. (; is comment) This kinda makes up for the 770 lacking a scroll wheel. I scroll web pages more than I zoom in and out.