Linkedin does not make any attempt to force you onto https, so no reason to worry about it. Any site that redirects you to https from http could have that redirect hijacked I guess too. Presumably they just have a list of people and can wait to hack them until next time they visit slashdot or linkedin.
Hmm, I just tried going to that link in Chrome and Firefox on a MacBook Pro -- Still takes me to an https. Also, doing an "inspect element" on a couple of images on there show me "https://static.licdn.com/..."
All the other links on that page (about, etc) do go to http://-only pages, but at least the links you provided and their static resources all go over https.
...presumably you have 'nothing to hide', then. Previous poster must be one of those kiddie porn obsessed al-qaeda terrorists, worthy of being Quantumed whereas you are good.