Facebook block doesn't work

[tyrannosaurhex]

Blocking Facebook.com doesn't work, either through URL or category block. Simply because to render even Facebook.com, the resources are fetched and loaded through other domains/subdomains used by Facebook.

The entire list of URLs used by Facebook is here:

https://github.com/jmdugan/blocklists/blob/master/corporations/facebook/all

In this day and age where using Facebook is as bad or even worst than pornography, wouldn't it be nice to have a separate Facebook category in the block area. I mean for FFS, there are 2000 URLs in that list, which makes it near impossible for an average joe to block them on the home network.

[rotblitz]

Add facebook.com, facebook.net and fbcdn.net to your blacklist. This definitely does it for Facebook. If not, then your problem is of a different nature, for example that you don't use OpenDNS, but a different DNS service.
Check it here: http://welcome.opendns.com/

Please note, a domain in the blacklist or whitelist also generally covers all its subdomains (and even the aliases), that's why the three domains mentioned above cover almost all domains from that Github list.

Further, regarding this list at Github, this also covers WhatsApp and Instagram which you may not want to block.  (But you easily could if you wanted.)