Is it Rollerblading or Inline Skating?
The term Rollerblading comes from the trademark Rollerblade® and has always (as far back as I can remember) been incorrectly used to describe using a pair of skates where all four wheels are in a straight line, as opposed to being side by side like quad skates.
Rollerblade® is not a verb, so to say you are Rollerblading is incorrect. Rollerblade®, Salomon and K2 are all examples of company / brand names that manufacture Inline Skates. You wouldn’t say you were K2ing, or Salomoning, would you 
? While you might own a pair of Rollerblades®, when you’re wearing them you are still Inline Skating, not Rollerblading! 
So when all four wheels are in a straight line, regardless of which brand you own, you should call them Inline Skates, and when you wear them you should say that you are Inline Skating.
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Sorry Jc, you can’t win an argument by calling someone a Nazi.
I got another dissatisfied comment from Jc this morning.
He’s still very upset about this post, evidently.
To cut a long story short, he thinks that it’s ok to use the term Rollerblading (as do I) and has major issues with the Verb explanation (oh dear!) …
Honestly, Jc. I don’t care.. You can call it whatever you like, really you can. If you want to sound like a newb, then go ahead and call it Rollerblading.
You are entitled to disagree, but please do so in a constructive manner. The post was simply a reply to a common question I get asked frequently.
Inline skating or just blading. Never RollerBlading!!
Your website is brilliant b.t.w x x
We do get caught up using brand names for lots of things… Good for the brand in question, but not so great for the others. And you risk sounding newbish, apparently