Indeed, I'm feeling badly about it. (I'm the author of the article)

Have reached out to Matt at The Oatmeal offering to donate $500 to his favorite charity -- but I'm open to do doing whatever he thinks is right.

Although it doesn't excuse it -- I did link to the original comic, mentioned Matt and The Oatmeal by name, and linked EVERY individual image back to the original comic. I didn't mean to not give credit for the original work.