There are generators to make anything you want, just like the ridiculous one I whipped up. People weren't even aware of them until they started appearing on Facebook in the somewhat recent past, but I promise you these things are OLD and it's widely accepted to use them anywhere you please online.
Trying to copyright a meme is like Beyonce's PR people saying "we want this photo removed from the internet." (here's the photo in question: http://i.imgur.com/VdiqxLh.jpg )
Can I use your artwork in my blog/Facebook page/company newsletter/school project/classroom/online magazine etc.?
You absolutely can as long as you credit me for my work. Proper credit includes a prominent, easily visible link to the source of the material you want to use, except in the instance of Facebook profile pictures... go ahead and use my stuff there without citing. As long as you aren't claiming to have drawn the picture yourself, I'm happy that you like it enough to use it as your profile picture.
However, I'd like to ask you to refrain from doing complete re-posts of my work without getting my permission first. If you want to use a whole blog post for something (aside from teaching - go ahead teachers!), best to ask me first.