Lorem ipsum is simply dummy text of the printing and typesetting industry.
Lorem ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book.
It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout.
The point of using iorem ipsum is that it has a more-or-less normal distribution of letters, as opposed to using 'content here, content here', making it look like readable english.
Richard clintock, a latin professor at hampden-sydney college in virginia, looked up one of the more obscure latin words, consectetur, from a lorem ipsum passage, and going through the cites of the word in classical literature, discovered the undoubtable source.
There are many variations of passages of lorem ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don't look even slightly believable.
If you are going to use a passage of lorem ipsum, you need to be sure there isn't anything embarrassing hidden in the middle of text.
It was popularised in the 1960s with the release of letraset sheets containing lorem ipsum passages, and more recently with desktop publishing software like aldus pagemaker including versions of lorem ipsum.