Thanks for your comment and for taking it the right way.

Regarding money, I have full understanding of the dilemma. I just think that it might make people shy away and use other web browsers, if they don’t approve of the small ad space.

Upgrades are good to solve problems, but telling users to upgrade (maybe several times) isn’t always a good option. And, as stated, it’s a pain for web developers to test for many different version.

Maybe I’m out on thin ice here (this is but a humble pondering), but perhaps there should be more extensive testing before releasing every minor version?

I’m obviously biased here but if you hire people to write and test a piece of software you need money. The ad space is not annoying and quite small if you use text ads, and it is also being used for more fun and creative things like all of a sudden you’ll see tips from other users about how to get the most out of Opera.

New versions and upgrades come quickly because we’re trying to solve YOUR problem (or somebody else’s) with some rendering issue, so that rather than wasting time working around a problem or blocking Opera-users you can tell users to just upgrade to the latest and fixed version

Don’t forget: Web developers have 4-5 moving targets called “web browsers”. Browser vendors have 9 000 000 000+ running targets called “web pages”. Sometimes we think someone is thinking up another self-contradictory way to mix CSS every day..

If it does the trick for you, keep using it.
But for above mentioned reasons, it’s not going to be my first choice web browser (for now, at least).