When I click "Everything", which brings a dropdown menu of categories up and choose the category for something which I just pinned, my Pins don't appear.
I think I read recently that Pinterest changed it so that not anything appears in the sub-categories - but what determines whose Pins do show up in categories? Is it the number of followers they have, or how established an account is, or...?
I see that the "Popular" sections is full of Pins that have been Repinned - but I'm still not clear how to get stuff to show up on the categories. Without being able to do this, unless one is pinning a lot of stuff, the exposure you need to drive traffic is quite reduced, since the main Pinterest.com board is constantly being filled with new Pins of all sorts.