I was and still am the only advertiser for a certain keyword. I used to show in the blue spot. Then for other reasons I had to lower my budget to like $5 daily. I have since raised it back to normal levels but my ad now shows only in the right position And I can't seem to get back into da premium. I really wonder what's going on? Did this have to do with the budget? Did the algo for putting ads in the blue change? What in general puts ads in the blue?
The "blue" area is not always available. I know in Google it will not always come up as they change the ads per search. Are you the only person bidding on that particular keyword?
Generally I have noticed that the blue area was only available when there were a bunch of ads. When there are 1-3 ads they are just put on the right hand side.