An Amen! from me to Poztron & Yoc.
While I download a lot of things, I am also a big user of the Preview function. I check out the first few pages of almost everything that comes in.
Collections that take up a lot of space? About 55 years ago a friend took me to the estate sale of the biggest railroad enthusiast in the St. Louis, Missouri, area. This guy had two or three actual track switches in his small back yard. We got there a bit late. A lot of the huge amount of model RR stuff was already sold and gone. But far from all. And, there were still piles of different RR company calendars. I remembered a WW2 era one so vividly that I bought a print of the painting on eBay in about 2003. There was also about a four foot stack of railroad pulp magazines, already sold unfortunately. This guy had collected everything!