^Here's a bit of history:
Lomography actually started out when two guys took interest in a camera called the Lomo Kompakt Automat(now became the LC-A) in Russia and decided to invest in it so they could distribute it outside the Soviet Union.
So then, in the 90s, when the camera was starting to lose its popularity, a bunch of students "discovered" it and took it to the next level. What they did was they began to open exhibitions and used the camera to take pictures anywhere possible. They would take pictures at the most impossible positions and take snapshots where ever. So the outcome were exuberant, vivid, never-before-seen photos. So, by word of mouth, relatives, friends, whatever, the popularity of this camera grew. Thus, the Lomographic Society was born! TAH-DAH!
so yea, eventually, they began producing other cameras like the Holga, Fisheye, ActionSampler and so forth.
(LOL i'm actually doing a piece of homework and i chose to do lomography haha)
It's a really spontaneous sort of photography with plastic cameras that could be made dirt cheap.
Digital photography and Lomography is two HUGELY different things. Even though Photoshop can reproduce the many effects that Lomo cameras can, they are still very different.
You may put a lot of time into getting the prettiest shot on a D-SLR but with a Lomo camera, you can shoot in a blink of an eye (without looking through the viewfinder!)
Lomography is truly, one of the best things I've ever come upon in my 17 years of living

seriously!