Any dealings with Stanford Coins

I noticed an advertisement for Stanford Coins (standfordcoins.com). As a promotion, they are giving away a Redbook for new members who sign up. But it appears they want all of your info. Does anyone have any experience with SC? Will they be calling me every week with the coin investment opportunity of a lifetime? They seem very "high end" for a small time collector like me. Any input?
PS. I am not affiliated with Stanford coins in any way, just seeking information.
PS. I am not affiliated with Stanford coins in any way, just seeking information.
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My Complete PROOF Lincoln Cent with Major Varieties(1909-2015)Set Registry