I'm not sure the etiquette for posting miles/points related deals, so mods feel free to remove if I'm doing this wrong.
You can the Chase [chase.com]
UR gateway (go to Ultimate Rewards, then earn points, then shopping) to get 2x UR on all purchases from Newegg.com [newegg.com]
with your Chase Sapphire Preferred.
I only have CSP for now; can anyone confirm CSR is also 2x and not 3x?
Saks.com (Saks 5th Ave.)
It may be possible to have points added retroactively for purchases, and I will try at lunch or tonight.