I can't even...
That little phrase in the title has become a meme unto itself, as a way of expressing that something that is idiotic, or stupid on the internet (that covers a lot of said internet). What is not so well know, is that good ol' HPL himself was the originator of said meme, as this neat little essay claims to prove. Go read it, then read some Lovecraft, it'll give you a whole host of new ways to express your emotions at online idiocy.