> Try always to adorn your answers with nice comments

Nice recursive explanation of what you understand to be "niceness" ;-)

> Some of my mates, are rude to her, and mock at her sometimes

But I'm neither rude nor mocking, I'm posting links to answers.

> I use to be nice to her, and explain her things like if she was 9 years old [...].
> Everything is easier this way, she is happier, and she can't say I'm mocking at her.

So you think I should treat magnetic et al. like 9-year olds? *That* would be offending to adults in my book, so I certainly won't do that.

> Sometimes it is more important the way you say things, that what you are saying...

I think that posting links is a rather neutral and factual way to answer questions. I still don't know how that can be perceived in a negative (rude or mocking) way.

> try to avoid being pedulant nor badly-ironic.

I only can get petulant after someone has started to call me names who didn't even bother to try to gather the content of what I wrote. "Badly-ironic" I'm never, I think.

> You might feel you are true, and you might be, but it is not that important...

Yes, not important to people who aren't interested in a factual, non-emotional discourse.

> it reminds a RTFM.

Interesting. I think it's quite the opposite. An "RTFM"-like answer would be to say "Use the forum search!", not linking to an answer like I do.