Singles, Dubs, and Trips on Swagbucks Facebook page

Canada
@Masihi (4198)
January 1, 2012 4:02pm CST
I've been with Swagbucks for about 2 years, and altogether I've earn $20, until recently someone told me that I could earn a lot more than that. So I joined the Facebook page and kept seeing something about a search term and said singles, dubs, trips at the end of their statements. I seen someone explain it to but I still can't understand what these are. I do searches and there's a few time that I get a win, but what are the dubs and trips? Can someone explain to me in laymen's terms? (Oh dear I feel so silly LOL, it's probably the most simplest of all things!)