What do you mean by "lomo" film?
As PJL mentioned, lomography cameras are actually crappy cameras from a technical perspective, with all kinds of "flaws" that a serious camera would avoid.
But, many of us find these "flaws" provide an unpredictability to photos, and that aesthetically they can be quite pleasing.
Below is an example of a lomo picture I took using a
Holga camera using Kodak Ektar iso 100 120mm film
Click to the actual image so you can see the details. There's a couple of things you'll notice:
1. Around the edges the picture gets darker and eventually fades to black. This is called "vignetting" and is due to the fact that the lens doesn't let in enough light (and evenly through the film) to properly expose the film. It's a problem they probably solved close to a century ago
2. The right side of the film (particularly the bottom right) has a reddish tint. This is due to the light leaks in the camera. They're actually quite unpredicatable -- i've had shots turn out green or yellow or other strange tints using daylight film shot in daylight.
3. The image is quite soft and not sharp even though I correctly focused. Look closely at the lighthouse -- 120mm film is very roughly 3-4x the size of 35mm film around each of the edges, so the area is maybe a factor of 10 to 16 larger. This should translate into a tack sharp image -- and if you see a picture shot with a mamiya you'll see it immediately.
Personally I think these "flaws" make what would have been otherwise a very plain photo of a lighthouse beautiful and aesthetically pleasing. That's just my opinion and you either love or hate the lomo thing.
Lomographers do the following to encourage these "flaws" in their film:
1. Shoot with a plastic camera. Plastic lenses won't be sharp and the things will leak light all over the place. Also since it's a cheap lens you'll get lots of vignetting
2. Shoot with expired film. Old film can do funny things when developed
3. Shoot with cross processing -- have film developed in different chemistries to change the feel of the film.
4. Shoot wihtout a meter -- while SLRs have many settings in terms of exposure time and apererature, lomo cameras have only one -- which makes getting well exposed film a problem.
Lomography brand film is just film Lomo sources from somewhere -- but it's not going to necessarily result in lomo type pictures if you shoot with, say, a Pentax...
Keep in mind there are some lomo films out there like the
redscale and the various rollei films like redbird and nightbird that are designed to react differently to light then normal film. These will produce strange results in a normal camera.
The best advice I can give you is to pick up some film and shoot, shoot, shoot. See what you like and have fun with it...
Oh, and the holga can be fun to pick up too. It's quite an entertaining little camera...