We may collect information about your computer, including where available your IP address, operating system and browser type, for system administration and to report aggregate information to our advertisers. This is statistical data about our users' browsing actions and patterns, and does not identify any individual.

For the same reason, we may obtain information about your general internet usage by using a cookie file which is stored on the hard drive of your computer. Cookies contain information that is transferred to your computer's hard drive. They help us to improve our Site and to deliver a better and more personalized service.

You may refuse to accept cookies by activating the setting on your browser which allows you to refuse the setting of cookies or by clearing your cookies. Please refer to your computer or browser manual on how to do this. However, cookies are essential for our Site to operate. If you disable your cookies, parts of the Site may not work.

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Specifically, cookies are used in the following cases:

(i) timezone: Storing timezone data of the user.

(ii) fb_uid, fb_access_token: Storing users with Facebook account connection information, including User ID and the access token. (iii) fb_publish_action: A boolean storing whether a user have publish action permission for ArtStack.

(iv) redirect_url_after_stripe: The redirect location after the user connects to his/her Stripe account.

(v) fb_click_id, sharers_user_id, share_id: Information for statistics, storing where and what Facebook post the user click to enter ArtStack.

(vi) fb_click_id is the id of the click action. sharers_user_id is the user ID who shares the post to Facebook. share_id is the ID of the shared post in Facebook.

(vii) detected_locale: Storing the locale of user (default is “en”). asked_open_app: A boolean storing whether already asked the user to use ArtStack mobile app or not.

(viii) return_to: Storing the place to be redirected after login.

(ix) mystack_layout: Storing the chosen layout option of the stacks list on user profile (grid or list).

(x) main_layout: Storing the chosen layout option of homepage (“mosaic or feed).

(xi) work_in_mind_sort: Storing the sorting option Work in Mind (default “recent”).

(xii) _user_credentials: Storing the access token of the user in ArtStack.

(xiii) _web_session: Storing the web session token of the user in ArtStack with respect to the browser.

(xiv) ab_test, ab_test_ref: Storing the information of A/B test. ab_test is a boolean storing whether A/B Test is enabled to that user. ab_test_ref is a number adjusting the probability of variant A and B. currency: Storing the currency code of the user (e.g. USD).

(xv) first_before_signup, last_before_signup: Already no use.

(xvi) channel: The source page where the user signup to ArtStack.

(xvii) OptimizelyBuckets, OptimizelyEndUserId, OptimizelyPendingLogEvents, OptimizelySegments: Cookies created by an A/B Test service called Optimizely.

(xix) mp{a hash value}mixpanel: A cookie created by an analytics service called MixPanel.

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