Reported over at WebmasterWorld, Ask Jeeves had dropped many pages from well established sites, including Amazon, About.com and WebmasterWorld around the date of March 14th. Members reported that "Amazon.com has only got 700 odd pages listed, About.com only 13." Other members confirm these glitch saying "Agreed - down from 17k pages in Teoma to all of 37, with nothing having changed at this end!" And one member checks WebmasterWorld and reports "inurl: on Webmasterworld shows 6 pages!"
At this point, it seems that Jeeves is almost back to normal. It is actually funny reading the thread. If this happened with Google or Yahoo, forget about it.
