X-panda!! You're from Canada too I see!
Anyway, there is some experimentation going on where they are giving a lower dose of chemo closer together. The rationale is, the side-effects are lower, and because the dose is lower, and it might be more effective to kill the tumour because you are giving it less chance to repair itself. Now, the problem is, I'm not sure WHICH tumours this exactly works on, or if it works on colon cancer tumours at all, but it is worth asking.