Google has a big problem: it can't find Yahoo Alerts. Instead it returns the site via a proxy.

http://www.google.com/search?q=yahoo+alerts

alerts.yahoo.com is not in the 100 results, while it's the first result in Yahoo, MSN, Ask.

{ via http://itsoup.blogspot.com/2006/12/search-for-yahoo-in-google-and-it-take.html }

Maybe because the main site returns the 302 redirect?

picasaweb.google.com also returns 302.

http://www.google.com/search?q=Picasa+Web+Albums