Rollerblades or in-line skates?

Pro-skaters keep reminding me that it's "in-line skating" and not "rollerblading". They are pretty adamant that using the word "rollerblading" is outright WRONG! So what's all this fuss about political correctness?

Okay, so Rollerblade is a brand of skates, and supposedly not the official name of the sport so you CAN'T use their name, or so they say. Is that really so? I hear that the sport was originally called "rollerblading", and in fact the very first society founded in the US to govern the sport had the name "rollerblade" in it!!!

While its perfectly alright to call "quad-skates" roller-skates (yes, I'm so not kidding, that's the "official" name!), and its perfectly alright to call tissue paper "kleenex", it is not okay to use the term rollerblading. What about using "Xerox" to mean "photocopy"? How 'bout Q-tips (that's what they call cotton-buds in the US)?

Nobody gives a hoot if I say xerox, or roller-skates, or Q-tips or kleenex, but I'd almost get shot by the pros if i say "rollerblade". In fact, I'm pretty sure the original "Rollerblade" company is pretty proud that their name is synonymous with the sport worldwide.

I don't buy all this political correctness. We should all just call things whatever we feel comfortable calling them.