This post is not "informed", as emu are not raised for their oil.
As a kid, we raised a couple of emu on our family farm. Not my favorite animal by far.
When they are raised commercially, the primary reason is for meat, which is very flavorful and low in cholesterol, tasting just like beef (weird since everything else tastes like chicken but a giant bird tastes like cow... go figure), but it's very fine textured. I personally don't like the texture, but I'm picky and my family didn't mind it.
Bi-products are eggs (obviously before slaughter), leather and oil. Emus are not raised specifically for the oil, just like getting lard from hogs or tallow from cattle, it is a way of being "green" and using every possible part of the animal.
I personally wouldn't hesitate to try emu oil products, but you should also give emu meat a try. It's a nice substitute for beef, especially for those with heart and cholesterol problems.
No, I no longer live on a farm, nor do I raise emu (& have nothing to gain from posting this). I just don't like seeing a few try to push mis-information on others.