Bestcashrewards.com is an illegal pyramid scheme designed to take money from innocent people. Dan Murhphy, the founder of this site, has a long history of these types of schemes. They usually last a few months or more, then the site goes down after Dan has stolen money from the innocent member. He later pops up at a new location with a new site, promoting yet another MLM scheme. Past attempts include:

-Meganets,
-Kwikfind.com
-your.net
-Pickacity.com
-bestcashrewards.com

These are just a few of Dan's many attempts.