[smackfu]

I find this whole concept weird. If you are using icons to represent what services you are on as links to contact you, why do you need one for a service you aren't on? And if you are trying to make a point of not being on Facebook, wouldn't a nice big colorful icon make more sense?

[cliveowen]

Actually it might be useful seeing how every webpage with the Like button you see is tracked by Facebook. The logo is just an assurance that FB won't know you visited the site.

What most people don't understand is that somewhere in Facebook's data centers there's a DB with entries like:

Paul Averageman (Facebook UID=3427342)

13:48 cnn.com

13:52 nytimes.com

13:59 youtube.com

ecc.

[lmm]

It makes it clear to users that they're not just failing to find your facebook contact link, there's not one there for them to find.

[nayefc]

Just HN passive aggressive behaviour.

[vezzy-fnord]

It's a classic form of slacktivist protest.