Flash Memory Drive Sticks

[somar]

I recently purchased a 128MB Flash Memory Drive stick (that connects via USB2.0). I was looking for some advice on a particular area concerning this - I was actually pondering drive compression to more than double the space available on the stick - anyone know if this would significantly affect the speed/etc of the drive? Or if it would affect compatibility? I'd assume because of the nature of memory being so much faster than hard drive storage, you couldn't screw the speed up too badly. Just wanted some input before I went ahead and did it.