[excuse-me]

Is that a problem anymore? I haven't really noticed any site that had serious issues in Opera (or chrome) - even my bank now works.

The only site with any problems is my Outlook Web Access and that only works full in IE.

[SCdF]

In terms of Opera users not being allowed into sites: mostly just experimental "Look at what we can do with random vendor extensions we've decided to call HTML5 today".

In terms of performance though, Opera has some weird issues. Try to go to theverge.com and scroll.. it's not pretty.