> And how exactly is it trickery if users have to opt-in to the program and they're told what the program does?
Ghostery seems to rely on vague messaging (last I looked, they don't actually say anywhere in their extension that they sell the data you share to ad co's and data brokers) and UX "optimization" (what quesera dubbed the "reconfigure-on-update dance", for example) to get less attentive users to leave blocking off and to send data - as the numbers show.
When you enable GhostRank, Ghostery collects anonymous data about the trackers you've encountered and the sites on which they were placed. This data is about tracking elements and the webpages on which they are found, not you or your browsing habits.
Online marketing companies need better visibility into real-world applications of their technologies and those owned by their competitors. GhostRank data is sold as reports to businesses to help them market to consumers more transparently, better manage their web properties, and comply with privacy standards.
I'd argue that Ghostery should come with a default configuration of ALL trackers and cookies blocked. I'd argue even more strenuously that after the user configures Ghostery manually to do so, ALL should continue to mean ALL even after updates. Ghostery currently has 700 3P cookies in their database, and almost 1700 trackers. There is no valid argument, imho, that a user who configures to block ALL really means "block ALL right now, but if you see any new ones, I would really like to try them out first!"
However, I mostly agree that Evidon has been up front and straightforward about what they do and how they do it. I want to like Ghostery. I do like Ghostery. This little bit of sneakiness though, honestly, taints the whole operation. You can call it an oversight, and I will agree that it can't possibly have much marginal value to Evidon...but it's somewhere between tone-deafness and carelessness, two qualities that call for heightened vigilance.
If you feel strongly that your opinion is important and should be prioritized, please create relevant topic here: https://getsatisfaction.com/ghostery/ and gather support to change it so we address it quicker.
Anonymizing data is hard.
> So you offer a very useful product, for free, and make money off of the people who fail to configure it so that it performs the only service they would ever purposely download it for.
I gave some numbers above that show, in practice, just how many users are in one of these unexpected configurations:
> Ghostery's game seems to be tricking users into sending their data to Evidon. Going off the company's own numbers, something like 45% of Ghostery users send Evidon data (by comparison, only 2% of Firefox users share data through Telemetry).