very popular. They're great in the winter, but make sure you take them off in the spring. Winter wipers are heavy, and if you use them all summer, you'll wear out the wiper motor prematurely.
And when using your wipers in the winter, remember to turn them off BEFORE shutting off the engine. Why? Water frequently freezes overnight during the winter. And if your blades freeze to the windshield, when you go to start your car, the wiper motor may burn out trying to get them back to the "rest position," while you're sitting there wondering, "What's that burning smell?"