> When it can be done without breaking too many users' day-to-day browsing.
I've had 3rd party cookies disabled for years. I can count the number of times this has caused trouble on one hand.
I've had 3rd party cookies disabled for years. I can count the number of times this has caused trouble on one hand.
It also turns out that this varies a _lot_ based on browsing patterns. For example, I never use the "log in with Facebook/Google/etc" things. People who do report a lot more problems from blanket third-party cookie blocking.