x86_64 is used as a baseline: the "x86_64" entry, whatever status it has,
is transformed into "all", and then the other entries in ARCHITECTURES
either dropped or rearranged appropriately.
From the description:
UploadIt is a Tracker Add-On that uploads a single file to the
online service *The Null Pointer* at https://0x0.st . The URL
for the uploaded file is put into the clipboard after the upload
has finished, ready to be pasted into an email, a chat window or
forum post.
waddlesplash