I have quite a few 35mm systems now. In addition I have some medium format, large format, projection and enlarging equipment, and a ton of books. The problem is that my house is starting to get cluttered. I really need to sell at least half of what I own. The problem is that every item seems to have its own unique personality. There is no overwhelming advantage to one system over another. So its been very hard for me make the effort to sell stuff. And quite frankly it takes a lot of work to sell things properly. Photographing items, writing descriptions, posting online, and shipping all take a ton of time. And international shipping is a pain because it requires a trip to the post office. So my question is, what steps do you take when you need to reduce your collection? What questions do you ask yourself to help you decide what stays and what goes?