What Information We Collect

For research, self-improvement, and security purposes we gather some statistics about our visitors.

We use Google Analytics to gather some statistics about our traffic. Information about the data they save can be found here.

In addition we gather some statistics of our own about each request. We save the following information:

  • IP
  • Referer
  • Request URI
  • Timestamp

This information is private and can only be directly seen in the database (and the information is not linked to specific user profiles). We use this information to determine which pages are most successful in certain periods of time and to see where our traffic is coming from. These logs are also used for generating the unique visit counter in the footer and the count of crawlers and guests currently online (on the home page).

We also collect some information for security purposes. We have automatic logging of some suspicious activity (e.g. too many failed login attempts). These activity logs contain the username, event, IP, and timestamp. Additionally, each user's most recent IP is saved (and is updated on each login). This information is only visible to administrators.


It seems to be all the craze lately to inform users that your site uses cookies. Obviously we have a session cookie to identify users (any site with a login does). Additionally, this session cookie is linked to a user's IP to help prevent session stealing.

Aside from the session, we don't really use cookies much aside from few challenges which make use of cookies.


According to Google AdSense which is used on Valhalla (thanks for not using AdBlock!):

  • Third party vendors, including Google, use cookies to serve ads based on a user's prior visits to your website.
  • Google's use of the DoubleClick cookie enables it and its partners to serve ads to your users based on their visit to your sites and/or other sites on the Internet.
  • Users may opt out of the use of the DoubleClick cookie for interest-based advertising by visiting Ads Settings. (Alternatively, you can direct users to opt out of a third-party vendor's use of cookies for interest based advertising by visiting