"What" is used to ask a question when there is an unknown number of possible answers. "Which" is used to ask a question when there is a fixed number of possible answers.
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Nobody loves a pedant.
Here are a couple of links for a 12 Mb mpeg movie showing the finals for the Tetris championship in Japan...for those of you who haven't seen it. "Crazy tetris block stacking action at lightspeed!"
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"What" is used to ask a question when there is an unknown number of possible answers. "Which" is used to ask a question when there is a fixed number of possible answers. There is an unknown number of favorite RSS feeds. Nobody loves a pedant.
http://www.fileplanet.com/files/80000/89344.shtml
http://diesel.2y.net/video/tetris_japan_finals.mpe g
Here are a couple of links for a 12 Mb mpeg movie showing the finals for the Tetris championship in Japan...for those of you who haven't seen it. "Crazy tetris block stacking action at lightspeed!"