This comes in handy far more often than you might think, especially if you test a lot of software and want to report bugs as well as check up on the projects to see what they're currently working on. If you're going to base your system/process around an application, it's probably a good idea to ensure that it's a health project that's unlikely to be abandoned - things like that.
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Use 'apt-cache' To Find An Application's Homepage • Linux Tips
It can come in pretty handy to know an application's homepage. You find an applications homepage this with 'apt-cache'. It's pretty easy.

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