, open source, outperform many others with no need for multiple extensions.
is a general-purpose blocker — not an ad blocker
specifically. uBlock's main goal is to help users neutralize privacy-invading apparatus — ads being one example, a point worth thinking on.
sold out to an AD company (Evidon) a long time ago; http://en.wikipedia.org/wiki/Ghostery
it is also reported as helping the AD industry by MIT Technology Review
"Evidon helps companies that want to improve their use of tracking code by selling them data collected from the millions of Ghostery users who have enabled a data-sharing feature "Ghostrank" in the tool." It is also questionable if this feature is enabled by default.
The "Ghostrank" feature enabled Ghostery sends collected user data back to the vendor, who then offers it for sale to AD firms. Installing "Backdoors" is never a good idea...
Ghostery is not really doing anything malicious, equally you do have to dig about on their site to see how they fund the extension/application. Personally the fact that Ghostery is owned by Evidon is the bigger concern as it`s clearly a conflict of interest. Call me jaded, however advertising and privacy rarely go "hand in hand".
"We rely on Ghostery users who opt-in to participate in a feature called Ghostrank®, which sends us anonymous information about the data collection technology they see, and where they see them. We take that information, add our analysis, and sell it to companies to help them audit and manage their relationships with these marketing tools. None of the information we share is about our users, nor is it stored in a way that could be used to trace back to our users.
Ghostrank® is off by default, meaning you can use Ghostery without sharing anything with us if you prefer. (But please opt-in! It is how we keep Ghostery free and continue to make it the best tool out there!)"
FWIW a lot of the other AD blockers employ similar techniques and or "Acceptable Ads
" lists, as ever limiting the number of applications that "phone home" is common sense, in this day and age.
For more details on the same subject - here https://forums.macrumors.com/threads/safari-ad-blocking-you-dont-know-a.1917507/