WikipediaPlus:Privacy policy

Software
'''WikipediaPlus stores no data about the sites you visit, neither on disk nor in RAM. It uses the minimum of data needed to do its job.'''

How It Works

 * 1) Wikipedia+ compares the URLs of new page requests with the  Access URLs of  preferred sites (which include wikipedia though the GUI doesn't show this). If the URL matches this pattern, then WikipediaPlus deduce the particular '{PageName}' you are browsing to and:
 * 2) * Cycles through your preferred sites and issues a HEAD request to each one in turn to a new URL that it forms by replacing '{PageName}' with the page name deduced the URL
 * 3) It also intercepts page loads and once the page title is available Wikipedia+ checks whether this matches the existing '{PageName}' deduced from the URL. If it is different it:
 * 4) * Cycles through your preferred sites and issues a HEAD request to each one in turn to a new URL that it forms by replacing '{PageName}' with the page name deduced from the page title
 * 5) The HTTP return code of these HEAD requests are checked. If this is <400, it attempts to notify the user
 * 6) * If the user has a matching Tab open, it makes a suggestion at the top of this tab. If this is in the background, it (optionally) also shows a notification

Data Storage
The addon stores 2 XML files, both in your Mozilla profile directory: The contents of these files are accessible through the GUI.
 * 1)  sites.xml  : The list of preferred websites to ask for page matches
 * 2)  pages.xml  : The list of pagenames to ignore

Future Plans
Future versions of the software may collect more information, but will not do so in an effort to identify individual users. The focus would be on aggregating shared experience and use of the software in an effort to enhance its effectiveness at making helpful suggestions. Any data collection will be voluntary (an easy opt out will be provided) and will be announced on the software's mailing list and download page.

Website
This website counts accesses from the software's 'About' tab, via the URL. No personally identifying data is collected - the only data collected is the software version number and locale.