I was looking to buy a ticket from Baltimore to Chicago and I thought I’d give a try Bing’s Travel section of search. They claim to know when it’s the right time to purchase a ticket. So the first advice was to wait, and I signed up to get updates on my email and here is the first email I got after few hours:

Bing Advice on Aug 14 - Click to see email snapshot

Then next day in the morning Bing changed its mind. At higher price it suggested I go ahead and buy the ticket: Read more »