Well, not really (re: the title of this post). But nevertheless, this is the type of service that'll probably become more and more popular as the generations that have grown up with the InterWeb get older.
Legacy Locker allows you to pass along your usernames/passwords for all your online accounts in the event that you die or are disabled. So it's not so much as a repository of archived pRon (which is probably what I'd really need) but a place to store your usernames/passwords and people you would want to have them. This begs the question: Who is YOUR e-beneficiary?
Would you want your wife/husband, parent, brother, sister, child having access to all of your email accounts? This service implies an interesting proposition of what people have in their online accounts and just how much of it they'd want to have "die" when they die.
Nevertheless, I think this is a useful service that I am NOT going to jinx myself by trying. I've told people all along to destroy/incinerate my computers whenever I drop dead. Lord knows I don't need anybody seeing all the foolishness I've got stored on those things.