-webkit-touch-callout: none; -webkit-user-select: none; -khtml-user-select: none;
-moz-user-select: none; -ms-user-select: none; user-select: none;
It's pretty interesting, and can be done in a way that doesn't require any user input.
This one describes an attack to not only steal browser history, but to reconstruct pages from the users cache.
Honestly modern browsers should just start ignoring off-domain :visted styles.
Edit: I should mention I bought Reddit Gold just for this feature, so I was optimistic that it'd work.
Another HTTP request between me and the content I want. Another 1s of RTT (UMTS link)... No.
Perhaps only showing the visited info on mouseover (as a cursor style),
or limiting it to cases where the style is a color-change that is not nearly the same as the background color, in a DOM element that is front-most z-index... (but this probably can't be computed reliably...)
or just defaulting to disabling, until the user approves the domain or path (NoScript-esque)
I was impressed when this list came up, but suspicious because I hadn't visited reddit or github yet today.
To full scrape the users history you would have to list every URL in existence.
Great proof of concept though.
Three sites is obviously too small to do much, but if you splat in a list bigger list of popular web sites you can learn a lot about your visitors.
Unless of course there is something on this service that actually limits all of your users into being one gender :)
Take your SJW puffery to Tumblr.
Personal attacks are not allowed on Hacker News. Please don't address other users like this.
(My comment here has nothing to do with pronouns.)
Singular they is well established as a grammatical construction (http://www.crossmyt.com/hc/linghebr/sgtheirl.html, for instance), and avoids the issue entirely.
Saying "'he' is grammatically correct" is like saying "C++ is the proper programming language." It's all about usage.