For more information on the new regulations, see:
These cookies are set temporarily, and are automatically deleted when browser windows are closed.
It is also used to remember your login. Once you login, your identity is remembered via this cookie, to prevent you needing to login again for a short while.
After 24 minutes of inactivity, this cookie will be regenerated automatically.
Implication of blocking: Some customizations will not work, nor will you be able to login to use member functions. The "OS Map Checksheet" page will not be able to display maps.
Tracking possibility: Once logged in geograph can of course identify users - however this is clearly opt-in (in the sense that you decide to log in). And the cookie is short term.
Geograph uses persistent cookies (a cookie that survives between browser sessions), to remember specific states - in response to specific use actions.
This is set explicitly when a user ticks the "Remember Me" tickbox on login. This enables the current user to be remembered and hence you will not have to periodically re-login - to continue using the member only features.
Implication of blocking: Will just have to periodically login, just like if never ticked "remember me"
When "Mark" an image(s) - the list of marked images is stored in this cookie.
Implication of blocking: Will not be able to use the Mark facility.
Used to indicate which map service last used during submission (v2) only.
Implication of blocking: You will have to reselect your preferred service during each submission.
GMapView - in addition used to remember the centre point - so that the map can start zoomed to the same approx location as the last submission.
Implication of blocking: Every time the maps are loaded will be back to the default.
NID, SNID, PREF, khcookie
These cookies are used by Google to store user preferences and information when viewing pages with Google maps on them. Note they are only on the *.google.com domain, not on geograph itself, as the Google Map is loaded direct from Google servers.
Implication of blocking: None for Geograph itself, unknown how Google will handle it.
uid, uit (possibly di, dt, loc, psc, ssh, sshs too)
Add this appears to set these cookies for tracking purposes. Addthis allows the user to share a webpage with many social sites.
Note they are only on the cf.addthis.com domain, not on geograph itself, as the AddThis widget is loaded direct from their servers.
Implication of blocking: The addthis button probably wont remember your preference of services available.
Although we no longer use it, we used to use Google Analytics to track visits. So some users might find they still have Google Analytics still set on Geograph domains (_utma/_utmb/_utmc/_utmz). Click here for an overview of privacy at Google.
The Google Analytics cookies were not used, remembered, or tracked by the geograph website itself.