I agree, this is the Olympus forum.
Back to your original question, the quoted focal length of any DSLR lens is exactly what it says on the tin: think of a magnifying glass focussing the Sun and the focal length is the distance you have to set that glass in front of a piece of paper to set fire to that paper. OK, DSLR lenses are more bulky but you get the idea. The crop factor is just how much smaller the camera sensor is than a frame of 35mm film. So if the crop factor is 2 then the sensor is half the size (lengths, not area) and as a result the field of view is halved. There's a slight complication with the 4/3rds sensor having a different aspect ratio but the principle stands.
So if you strap a 50mm lens in front of a sensor with a crop factor of two then to get the same field of view on a frame of 35mm film you'd need to use a lens with a focal length of 100mm (2 x 50).
It's still relevant to specify primarily a lens by it's actual focal length (rather than it's full-frame 35mm equivalent as is usually done on superzooms) as a single lens can be fitted in front of sensors of different sizes, either by design or by using an adaptor.