One thing that's been bugging me since I started using Opera
is that bold and italic text was showing as normal text in my personal blog.
Yet other browsers were correctly displaying bold and italic on my blog.
I'm still not entirely sure why Mac Opera had a problem with it,
but I fixed it by using the Lucida Hybrid stylesheet tweak.
I adjusted a few other things while I was at it.
The most obvious is that the font size is larger.
Most RSS readers won't pick up the stylesheet,
so take a look at the actual blog.