funzel exaggerates. c't still has usually some quite sophisticated articles about things like hardware internals or algorithms in every issue (the magazine appears bi-weekly. And they're definitely a bit biased towards Linux (and have far more than just one page per issue about it. More like 20-50, I'd say), though they don't let it get in the way of facts. One such fact is that Windows is the most widely-used operating system.

And c't has the best April Fools' Day jokes I've ever seen anywhere. They are very well disguised, usually in an article that really sounds like it might be true if you're not very familiar with that particular field. And they hide an "April Fool!" message within the article! Two examples: