Copypasta (or Copy pasta, or COPY PASTA) is text on internet forums that gets copied and pasted over and over. This is how it works: someone posts something on a forum or board like /b/ that riles people up. People see the topic and copy that first inflammatory post. Then a week or so later someone posts it again. Or they might post it a day later. Or a minute later. Whatever. The flamewar starts over again.
some parts of the graphic that are hard to see with the available low-res shots: