Cookie policy
Cookies are small files a website stores in your browser. Local storage and session storage do a similar job. Article 22.2 of Spanish Law 34/2002 (LSSI-CE) says we need your consent before using any of them, except the ones strictly needed to provide the website.
Nothing for analytics or advertising runs until you accept it. You can accept all, reject all or choose by category in the banner, and change your mind at any time:
What we use
| Name | Provider | Purpose | Duration | Category |
|---|---|---|---|---|
| sm-consent (local storage) | SkeinMath | Remembers your cookie choice. | 12 months | Strictly necessary |
| __cf_bm, cf_clearance and other Cloudflare security cookies | Cloudflare | Tell people from bots when Cloudflare needs to check a visit. Only set in those cases. | __cf_bm: 30 minutes of inactivity. Others: see Cloudflare's list. | Strictly necessary |
| Cloudflare Web Analytics (script, no cookies) | Cloudflare | Counts visits and page load times. Cloudflare states it does not use cookies or local storage. | Does not store anything in your browser | Analytics |
| sm-pv, sm-pop (session storage) | SkeinMath | Count pages viewed and pop-under ads opened in this visit, to show fewer ads. | Until you close the tab | Advertising |
| Monetag cookies and identifiers | Monetag (Propeller Ads group) and its advertising partners | Show ads, limit how often you see them, measure them, personalize them and detect fraud. | Set by Monetag and its partners | Advertising |
Monetag decides the names and durations of its cookies and can change them. See itsprivacy policy. You can also stop personalized Monetag ads in this browser on its opt-out page.
How to delete cookies in your browser
Rejecting cookies in our banner stops new ones. To delete cookies already stored, use your browser settings:Chrome,Firefox,Safari,Edge.
More information
For how personal data is handled, see the privacy policy. Questions: see the contact page.