A LinkedIn email this morning has me pondering what happens to our online stuff after we die

Got the usual LinkedIn updates email today with the list of new jobs, work anniversaries, etc for my contacts. As I scrolled down the list, I noticed the name of a former colleague from my engineering days at TRW announcing his 11th anniversary there. Sadly, this colleague died prematurely of a heart attack in 2010. 

We need some kind of solution for this that lets our online presence be updated post mortem without sacrificing security while we're still here.?