Nice work there on the article, there's always the first time
A bit on the Opera: I guess the reason behind its low popularity hides in its history. Although the browser is not even close to the bloated mess it used to be only a few years ago, the internet still remembers it as such, and thus the market share. The marketing team isn't really doing good job at changing the imago either: at one point, they advertise its minimalistic UI, at the other the ton of features it has – these are kind of opposites. I switched to Opera a year ago because I wanted my browsers on different computers to be in sync, which could be done with opera in breeze, I've never used built in mail or torrent clients (who does?) and I don't think they're even installed in the browser.
The other reason must be the fact that it's currently the only (?) browser developed outside US (maybe they should market it this way). Most of the tech/internet-related journalism comes from the states, so it's not hard to see the connection there. Maybe I'm a bit cynical, but…
In the end I'm just happy that IE is finally getting its guts together and that there's a browser for anyone, not just 2 to pick from