Do you know what meme is? For the ones uninitiated, I will explain, peeping in to Wikipedia:). Meme is an idea, behavior or style that spreads from person to person within a culture. What we are actually interested in is an Internet meme. So, paraphrasing a bit, meme is a concept that spreads from person to person via the Internet.
What are the latest memes we currently know? The most recognizable ones that come to my mind are: Gangman style video by Korean musician PSY; cats' pics with laughable captions; pics with rage guy, lol, okay, yu no guy, lol face — plenty of them you will recognize at once, if you are an active user of social sites.
But have you ever thought of how these memes are created and became so popular among users? Here is the recipe of creating your own meme, where the ingredients and the proportions are clearly shown. Have a look also at the history of the memes from 1980 to today. It is interesting.