Fuse has always had a corporate website (fusescience.com) and then poweredbyfuse.com came along when they started selling product via internet. Venezuala has a poweredbyfuse.com website for online orders in that country. I guess there are 1 or 2 more out there I am unaware of.
BeDub mentioned this website www.atlasadvisorsllc.com/, which seems would be the one connected with Fuse.
I have not been bothered by Fuse having multiple websites. fusescience.com was their website before product release and they created poweredbyfuse.com when they starting selling product online. Does not seem too fishy to me. Then one in Venezuala for that country.