One of the most striking features of military blogs is their short life spans. As many of the best milbloggers return from combat in Iraq and Afghanistan, they stop posting and leave their own homecomings as the coda to their digital masterpieces. This is fine for them, but it raises an essential problem with preserving often invaluable sources of military history that can easily disappear on the Internet. Fortunately, a growing number of milblogs are being converted to books, creating new opportunities to record (and improve) on the original milblogs.

http://www.armedforcesjournal.com/2006/08/1936101