You are right, this is not necessary, and we stopped recording this information a while ago. Sending this information should be an option that users can turn on or off at their leisure, if it happens at all. Our aim is to provide our users as much privacy, and control over their privacy, as we can, and this old design choice does not fit that aim.
The Firefox addon has never sent that information, and (though not recorded anyway) we'll be removing it from the Chrome extension and updating our privacy policy shortly.
If a subscriber doesn't visit any of our existing partners, then we don't pocket that money which was intended for websites. Instead, it's set aside as a fund for helping new websites to join, with a particular priority on those sites that our subscribers use the most.
It may not be so bad if all of a subscriber's money goes towards a single publisher. We measure rates in terms of RPM. In such a circumstance, that single publisher is receiving an excellent RPM, and that gives us a good argument for convincing new websites to join.
As you can imagine, there are many things on our to-do list -- but a list of participating sites seems to be frequently requested, so that needs to move up in priority.
Check out our privacy policy at https://webpass.io/privacy for a detailed explanation of what we do with your data. If there are any scenarios that aren't clearly explained that concern you, please let me know and I can have the policy updated.
I'm one of the co-founders of Webpass.io, and a dislike of being tracked is the primary reason why I am inclined towards using an adblocker myself. Before I realised the amount of tracking that went on, I hadn't been motivated enough to use an adblocker.
Webpass.io has been designed with this in mind. Webpass.io involves removing the advertiser from the transaction -- partnering sites remove advertisements, which should eliminate tracking by advertisers. When it comes to trackers from other sources (e.g., analytics), you can continue to use plugins like Ghostery or the EasyPrivacy list.
Webpass.io is a way for you to support websites, that is compatible with whatever means you use to protect your privacy. You don't need to opt into ads/trackers/third party cookies for our service to work. We track little from our users (check our privacy policy), and we have plans for the future to make our privacy features even stronger by offering (near) anonymous use of our system.
As for our own website, we have avoided using any code that could be used to track you by third parties -- no social media buttons that talk back to their original servers, no third-party commenting system, no third-party analytics, and so on.
The Firefox addon has never sent that information, and (though not recorded anyway) we'll be removing it from the Chrome extension and updating our privacy policy shortly.