LimeWire strangely sometimes seems to use AND, but often uses OR. For example, I'm trying to find "Cindy, Cindy" by Lulu Belle and Scotty, so I enter Cindy in the Title field and Lulu in the Artist field. The resulting finds include Cindy Lauper and Cindy Thmpson, but none of the extended information for the finds contains Lulu, either as a full word, or a part word. An OR, in other words. At least, that's how I see it!