I'm sure you've heard (older) people say this about various websites, such as Twitter and FB. I've always been confused by the phrase because it seems so obvious what the point of those two sites are and laughed at the idea of not getting it. But now, I'm having this problem. Am I old?

Recently, I was reading how people on Etsy are recommended to try to advertise on Squidoo, and how it's so good for getting page views. So last night I tried to make a page on Squidoo, and I really just... don't understand it. Is it like a free website hosting site? Is it like twitter? IT DOESN'T MAKE SENSE TO ME. I'm really struggling with this site, but I'll try it out because it might get me more sales.

What sites on the internet do you not "get"?