S/he didn't know what one is, or just didn't know the name for them. I'd be more concerned about the former. Not sure about the proper response, though. - Katy S

Had no idea what one was. - Yo Joe. No, go slow.

Wow. They seem to be everywhere, so that is, well, odd. - Katy S

Got an example which will explain it with an image? - awd

I sympathize with the librarian. I frequently wish I'd never heard of infographics or that they'd go the way of Second Life. - Walt Crawford

They have become a rather special category of spam, lately, it seems. You might want to link to our shiny bright oversimplification! I liked the idea at first, but the ones I've seen lately just seem lame. - barbara fister