In March this yr, Facebook released a tool called “Why am I seeing this?”, which allowed users to take a deeper take a look at the advertisements they have been being shown and the rationale they have been being targeted.
The service was created in response to the general public outcry following occasions just like the Cambridge Analytica scandal, which raised considerations concerning the abuse of consumer knowledge by big tech corporations and the shortage of privacy that it entails.
At this time, Facebook has announced that it's additional improved the software, claiming to have increased the quantity of transparency provided general. This consists of rather more intricate detail on the rationale for being focused, a clearer record of the businesses that own and promote your knowledge, and a direct hyperlink to a page where you'll be able to change your concentrating on preferences, together with the power to choose out totally in sure situations.
So... why am I seeing this?
The function is comparatively straightforward to access. If you discover an advert in your Facebook feed, clicking on the three dots in the prime proper nook of it lets you access a “Why am I seeing this?” display.
Previously, this space would present you one or two reasons for the advert being focused at you. The reasons given have been typically fairly obscure, maybe mentioning that you simply’re in an applicable demographic to be focused, or that you simply had visited the website of the product being advertised.
With the update, the record of causes will reportedly be extra particular and complete, offering up specific details, such because the pages that you've appreciated or pursuits that you've listed, and the way this has influenced the concentrating on.
This improved web page may even show you precisely the place this info got here from and provides you more direct controls for both hiding advertisements from this supply or adjusting the management this advertiser has.
A quick video courtesy of Facebook demonstrates the up to date "Why am I seeing this?" tab.
How do I choose out?
Despite the apparent improvements to the clarity of these choices, it’s still a slightly labyrinthine course of to entry the settings, though after you have navigated to the suitable page, the small print on supply are more thorough. 
In an effort to view which advertising corporations and knowledge brokers have your info and are selling it to advertisers, head to Settings > Advertisements > Advertisers and Companies > “Who have uploaded and shared an inventory together with your information”.
This exhibits you an inventory of all the companies together with your personal knowledge, from which level you possibly can select ‘View details’ on every one and, for these customers which have acquired the replace, open the ‘Privateness choices’ tab and choose out.
Whereas the replace is now stay, it isn’t yet out there to everyone. Fb hasn’t explicitly said when it'll develop into obtainable to each consumer, nevertheless it's expected to slowly roll out in full over the approaching weeks.
