Greatest Web Apps?

In this week's edition, Information Week's Charlie Babcock has chosen his list of the "12 best web applications of all time". Here's the list:

12. AOL Instant Messenger
11. Digg
10. Hotmail
9. World Of Warcraft
8. Wikipedia
7. XMLHttpRequest object set
6. Amazon.com
5. eBay
4. The Well
3. Craigslist
2. AltaVista
1. Apache Web Server

A couple of points jump out. First, how many of these apps 'just missed' or were subsumed in other apps; AltaVista is the most prominent of these, and actually received its own sidebar to the main article. Also, the apps that are missing, including Paypal, peer-to-peer (Napster, et al.), and (of course) Netscape. But thought provoking, and well-done by Mr. Babcock.