When you browse the site, standard server logs may record your IP address, browser type, and which pages you hit. That's normal web hosting stuff.
If you copy a promo code, we log the click so we know which deals people actually use. No account required for that.
If you submit a coupon, we store what you send us: store name, code, description, and any email or name you choose to include.
If you rate a code or store, we keep a browser fingerprint hash so one person can't spam votes. We don't tie it to your real identity.