One of the more curious screen resolutions I’ve ever had to deal with is 544 x 376, which was the size of the original WebTV (later MSN TV) screen. Our decidedly low-tech customer base flocked to the service, and I learned quickly enough to keep the page width down to 540 or so.
WebTV was founded in 1996; Microsoft bought it the next year for $425 million, and turned a fair profit on the service for several years. But no platform can last forever, and this one dies at the end of September.
(Via this Steve Lackmeyer tweet.)