Great post about the skirt! What a treat - you really are shopping for free in your own wardrobe!
Sweeteners are definitely confusing. I think it's a fuzzy area to be honest and one that's further confused by the alternative i.e. eating too much sugar. I suspect they are not brilliant for you but the cancer link must be very weak - if they were really worried about it, it would be off the list of approved items. Think the research on rats or mice was discredited as the results were never replicated in humans.
I'm sticking with Stevia though - it's a bit more expensive but is apparently one of the safer ones...although that could just mean there's been less research! If you're feeling good with what you use, stick with it I say. (Although given that I'm not a doctor, nutritionist or scientist, I have no idea why I've taken it upon myself to try to give advice on this. Please ignore me!!!)
Jx