Knowing how much you spent on games used to matter, because it used to be you would get bonus points after spending so much money. Under the new rules, you just get double points for all purchases, so there is no longer a need for Best Buy to track how much you spent.
Gamers Club is just something you sign up for as part of your RZ membership, there is no separate club to link to.
Before posting I research everything first or use my own experiences. All my posts are not representative of Best Buy, its affiliates, subsidies, parent if any, stockholders or anything to do with Best Buy. I love Best Buy even though I work for a competitor, I do not now nor have I ever worked for Best Buy.