Pingdom, an uptime monitoring company, has published its list of Downtime in 2007 for the 20 most popular websites, over its blog – Royal.
These are the 20 most popular websites in the United States, according to Alexa.
Site Downtime 1 yahoo.com 0m 2 google.com 7m 3 myspace.com 1h 0m 4 msn.com 2h 45m 5 ebay.com 6m 6 youtube.com 4h 44m 7 facebook.com 25m 8 wikipedia.org 2h 23m 9 craigslist.org 1h 9m 10 live.com 1h 48m 11 amazon.com 21m 12 blogger.com 4h 47m 13 go.com 8m 14 aol.com 3m 15 microsoft.com 13m 16 cnn.com 22m 17 comcast.net 3m 18 imdb.com 29m 19 flickr.com 30m 20 photobucket.com 1h 23m
Yahoo! is the only website having zero downtime. Even Google, Flickr, Wikipedia and Blogger have been going through heavy downtimes under the heavy traffic.