A small list of ways how articles (or documents) will disappear at some future point in time.

• User error removes the originals
• User error removes the generated files on the server
• Hard disk failure (on server)
• Hard disk failure (on author)
• Backup failure (one, two and three)
• Server failure
• Hosting company out of business
• Domain name registrar out of business
• Media company out of business
• (Author’s) Death
• Lack of interest
• Lack of technical expertise
• Removed everything in anger
• Revisionism
• Changed interests
• Cost savings
• Changes in publishing software
• Conversion costs
• Backwards incompatible software changes
• Changes in laws