for me they vary, sometimes they're just capital one, sometimes they're the fusion, and sometimes they're mostly thiers-issard, or fendrihan, or srd, or cs. I thought google may be tailoring them not only by context but by user history (they certainly know who i am as i'm signe on google, and if i'm not they still have my ip and the cookies from my previous sign ups). i've never seen the banana ad though, i guess my stomach fat isn't worth cutting.