If you're sending me code to run on my computer—especially if I'm paying for it—you either need to have glanced at the code yourself or have some reason to trust what's in there (it's from a company you have a business relationship with, it's a major library from a known author that other apps on the store are also using, etc.). Otherwise you're being irresponsible. If you don't have the time to look at the library, don't use it.
