5:46p EST
bafk2bzacebi57tmw5oop5tk6uzqlgcgoenrl7r45eiagvgjr2u55ct3lxldek is a file containing lines of "hello world". Deals for storing it are pending with f0410001 and f0167254 . It will take a day or two for them to complete.
5:48p EST. I may have written 5:46 maybe not unsure.
The miners I tried store files for a maximum of 539 days, which is a little sad.
I think that content can be retrieved by anyone, not just the uploader.