In other words, a third-party app store works less like a storefront and more like a app store functions less like a storefront and more like a catalog (indeed, much of their revenue comes from Web ads and commissions for referred downloads).
Clearly, though, as in the case of third-party guarantees on high-priced works, this is a much more attractive proposition for guarantors when art market confidence is pretty high as it is right now.
Since it is not the job of our friendly but gun-toting Sheriff to make legal determinations as to who-owns-what, a third-party claim effectively gums up the works of any levy, and the Sheriff cancelled the sale of the office building.