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Poptopus is a music widget that pays every time a song is played, instead of only when it's purchased.
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The widget itself is rather small, and includes a video player on the top for advertisements to play before the songs. This is somewhat confusing, as many viewers may mistake the music widget for a video widget instead (the screen goes black once the song begins). The Poptopus widget is also smart to include direct links to an advertiser's website during the commercial, as well as links to the artists' website and to the location where their songs can be bought, which are available at all times.