I've got this problem to solve from a crypto / maths problem solving website where they give you a simple black GIF image and tell you there's a message within it, concealed using steganography.
Spent a few hours writing a quick app to re-process the least significant bits of each pixel and run some tests in what I thought was the right direction.
Just realised it's a GIF, not a bitmap, so this is route is completely ineffective.
That's all. Carry on.