Incognito mode only prevents the browser from saving cookies, history, etc. It does nothing to prevent servers from recording other meta data about you. At the very least, you visited the spammy site and Facebook using the same IP address. That's an easy way to connect the two browsing sessions.
I've also heard of other ways to profile you, based on user ...
No, there is no direct way. There are seven ways to target an audience:
Age & Gender
In your case you can use Custom Audiences option. For this You should know all the firefighters' and teachers' spouse Facebook ID or email address or username.
You can try Demographics/Interests ...
From Facebook Help Centre:
How to Report Things
To report an ad:
Hover over the ad and click the X in the top right
Choose Hide ad to report a specific ad, or Hide all from... to hide all ads from that particular advertiser
Something I Can't See
If you can't report something on Facebook because you don'...
Managed to finally figure this one out.
Like I said we used to get these and they suddenly stopped. No notification setting seemed to apply.
I went to one of the existing email comments and clicked 'Unsubscribe' at the bottom.
On this unsubscribe page I got a clue
Then on your notification settings click 'Edit' next to 'Email' and search for Comments on ...
From Facebook for developers FAQ:
Q: How many audiences can I create?
A: At this time, there is a maximum of 10000 Custom Audiences from your Website that can be created in a single account.
See the Hailey's answers from Facebook Help Team on this topic:
There's no maximum to the number of people you can add to your audience, but keep in mind you can only ...
Some technologies such as FingerPrinting associate to your computer a unique number (based on background image generation associated with the fonts installed on the computer, screen resolution and other settings...). Such technologies do not need to leave any data (such as cookies) on the computer to work. This is why going into icognito mode is a good idea, ...
A Page User ID is a name for a page a custom Username for my Page or profile. It is visible to the public.
An App User ID is a code for a particular browser to protect FB users’ anonymity but to allow advertisers to target specific audiences. Details.
You'll want to access it through the Graph API. The details on pulling friends are here.
You can also play around a bit with the explorer tool to get a feel for things. In this case, you'd just append YOURUSERID/friends in the explorer window and request the information with a token.
If you're a masochist, https://www.facebook.com/YOURUSERNAME/friends?...
Yes, it can be done by using email addresses, phone numbers, Facebook user IDs or app user IDs. It is call Custom Audience.
Custom Audience: Use email addresses, phone numbers, Facebook user IDs or app user IDs to create and save audiences you'd like to show your ads to. Learn more about Custom Audiences.
So Ralph can use Mary's friend's email ids, phone ...