There will always be questions needing answers and searching the topic may not adequately answer anything.

Sometimes newbies do not know the proper nomenclature. They might wonder "does this lens work on 4x5?" but don't realize what they are asking about is the "image circle," or know what that even is. Then there are the innumerable number of similarly-named lenses from large companies which may vary greatly in specifications. And even if you do grasp everything and know exactly what you are looking for, a Google search of a specific lens and a question about using it on 8x10 will often discover one person saying it has almost enough IC for 11x14 and another poster saying the corners are so poor you shouldn't go past 5x7. Oh and of course no example images or possibly dead links.

I've also even recently read posts saying to go to "XYZ website" and search for this or that tidbit of information, but then that specific site had been gone for years. Such is the nature of the web.