Learn English – What’s the word for laughing in a sad situation

You have to accept that in America, the n-word is regarded as a more vile epithet (or as more taboo) than it is elsewhere in the world. You generally wouldn't use it most places, except perhaps in a discussion of historical attitudes towards negroes and slavery (and I'm not even sure that the alternative n-word is really acceptable; people tend to use circumlocutions or euphemisms to avoid it), but in America, you really get into trouble for using it. The sort of level of odiousness is that kids using it at school will be hauled to the principal's office, and possibly suspended.

I would expect that the newscasters would avoid discussing the song if at all possible - there'd be other subjects to discuss instead.

Re "How can i find out if a turn of phrase is pleasant/good/valid?", writers.stackexchange will serve if you phrase your questions properly. Per its faq, one may ask about "Non-fiction, technical, or scholarly writing" and "Copywriting", among other genres, so long as you are not asking about "strictly interpreted correctness of English grammar or syntax rules".

In the first collegially-rewritten example, "In our example we would for example" is quite clumsy. Consider instead "In our example, one can check cache statistics with an AppFabric powershell command, but use whatever tool you most like".

Re the second example, advice to prefer readily available to easily accessible seems wrong. That a phrase is frequently used carries no weight if it's the wrong phrase. The information in question evidently is readily available, and the actual problem is it isn't easy to access without knowing all about some program.