Seeing a couple of comments in the iStock help forums and some odd results in a search I did, I think iStock has done something to break its search parsing for multi-word terms.
I typed
tropical beach into the top box, photos only, and I get in the results (many of which are beaches) a beer bottle, bunch of grapes and a dog, all isolated, all with no obvious connection to what I searched for.
Grapes,
dog,
beerslobo had reported seeing a bit of
grungy paper in a search for
car repair, which may be the same thing. A help forum post (without examples) in the search thread mentioned this type of thing too.
Anyone else seeing this? Perhaps if we can give IS some more examples they can get it fixed faster.