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As the Internet Archive shows, there is great value in preserving digital information for posterity. But sometimes, there is greater value in destroying information and doing so quickly. Information Week recounts the 2001 incident when an American spy plane was forced to land in Chinese territory after the plane collided with a Chinese fighter jet. The article notes that the U.S. crew was unable to erase the hard drives in time to protect the security of sensitive information. “Since then,” the article states, “researchers have been looking for a way to quickly erase computer hard drives to deny access to sensitive intelligence data.”

According to the article, researchers have developed an effective technique to erase hard drives in minutes rather than hours:

The researchers concluded that permanent magnets are the best solution. Other methods, including burning disks with heat-generating thermite, crushing drives in presses, chemically destroying the media or frying them with microwaves all proved susceptible to sensitive, patient, recovery efforts.

The military need for such technology is obvious and is a simple no-brainer. But additionally interesting are the potential commercial and consumer applications of such technology. According to the article, the researchers claimed the magnetic eraser could be used to quickly erase VHS tapes, floppy drives, data cassettes and hard drives. Maybe someday soon, it will be unacceptable and even illegal for corporations and government agencies to keep sensitive information — like your social security number — on easily stolen laptops, unless those machines are equipped an effective auto-erasure mechanism.

Inheritability of blogs: You take Aunt Esther’s silverware, I’ll take her blog…

Over at the user forums on, there’s an interesting thread on “web logs and wills.” Forum user timethief writes:

What happens to . . . web logs if a person dies and their executor notifies [the weblog’s host] of their demise. Can one leave their account, username, password and API key number to another person in their will?

What a great question! It reminds me of the case last year of Lance Corporal Justin Ellsworth, who died in Iraq. After his death, his family asked Yahoo for access to his emails. Yahoo refused. After a court ordered Yahoo to hand over the contents of the account, Yahoo complied. But the parallel to Ellsworth has its limits. With emails, there are significant concerns over privacy: it just cannot be assumed that every deceased person wants his or her executors and heirs poring through their private and potentially embarrassing emails.

In contrast, blogs are intended for some level of public consumption and the privacy issues generally don’t run as high. (Though even with blogs, privacy concerns can exist, such as with David Lat, the formerly anonymous “Article III Groupie” who writes Underneath Their Robes.) Indeed, although many blogs are quickly abandoned, others are intended to serve as lasting statements of authorship, whether professional or personal (or both). As timethief noted in a later post, “Blogging is now and will remain part of what defined me as a unique individual.” But blogs aren’t books or magazines. After we’re gone, existing copies of books we wrote can continue to exist without additional effort on the part of our estates or heirs. And our estates and heirs can’t force consumers to return legally acquired copies of books.

But the book analogy is hard to apply to blogs. Blogs aren’t material objects and they’ll disappear without maintenance or preservation. But long-term maintenance isn’t really practical, at least yet, for blogs whose owners have passed away. If hosting accounts aren’t kept active, or applicable payments stop, or hosting providers go out of business, or computers fail, or blogging code & databases become incompatible with future technologies, our blogs — like other web-only publications — may disappear or break. Plus, a blog might be shut down by an author’s estate or heirs, unless perhaps some sort of enforceable provisions can be made by the author that the blog be maintained posthumously.

Communal blogs like The Volokh Conspiracy stand a better chance of lengthy lives, since maintenance tasks can be undertaken as new members arrive. But most other sites, even highly successful ones like Howard Bashman’s How Appealing, are run by only one person. For an estate or heir, long-term maintenance after an author’s demise is not necessarily simple or — excuse the pun — appealing. In a rare case, successful blogs like Bashman’s could be valuable estate assets that would encourage continued maintenance and even eventual profitable transfer, but most blogs will utterly lack any such kind of maintenance incentive. (Of course, this is all illustrative, and Eugene and Howard should be blogging for many decades to come!)

This raises the question of digital preservation. Because long-term maintenance may not always be feasible, digital preservation of old sites becomes really important, and the utility of the Internet Archive’s Wayback Machine can’t be overstated. But I think that Wayback Machine is just the beginning of a dialogue over how — and when — to preserve web-only materials. Putting copyright issues to the side for the moment, the Internet Archive doesn’t archive all sites, and when it does, it archives some sites more often than others. Plus, it’s not entirely clear whether the Wayback Machine is currently capable of properly archiving all types of blogs: the Internet Archive states that sites that are database-driven or that generate dynamic web pages can’t be archived. I’d think this limitation could apply to at least some blogs (such as this WordPress blog, which is driven by a PHP & MySQL database).

But a quick review of the Wayback Machine suggests that, despite the disclaimer, the Internet Archive may be improving its ability to archive blogs — here’s links to a WordPress-run site that was archived incorrectly in March 2004, but appears to be much better represented in an archive from November 2004. Hopefully, the Internet Archive is continuing to improve its capability to archive different kinds of webpages. Needless to say, as web publishing technologies evolve, it will remain a struggle to find ways to accurately and authoritatively preserve such materials. My quick review of a number of blawgs suggests that some appear to have been pretty nicely archived, whereas others have not. I’ll address this more in a future post.

Thus, I think that timethief’s question — a really good one — leads to additional questions about whether web-only materials should be kept online, and if so, to even more questions about how, where, and by whom they should be maintained or preserved. I don’t think the answers to these questions are easy or obvious.