Yes, at the moment, due to the limitations of html, it is impossible to upload folders directly. However, if you upload an archive (.tar, uncompressed) and toggle the option "Extract archive" the torrent will contain the files of this archive, under a subdirectory named after the archive (minus the .extension part).
You can share it with your friends, of anyone, if you give them a link to this page, to the torrent. You should also start the torrent into your favorite torrent client, this way, you will be able to share it. If you don’t do that, the download speed for the people who want download the file will be smaller.
You have to go to the page for the file and enter the deletion password into
the box at the bottom of the page. If you don’t have the password, we have no way
of knowing if you are the initial uploader (because this service is entirely anonymous)
and therefore we will not be able to comply with your request.
You should also understand that because of the way the torrent network was built, the file cannot be remotely deleted on the computers of the file-sharers. So while the file is gone from the website, it might still be shared and accessible via a saved torrent file or magnet link.
Multifile torrents are enabled
Adding webseeds to the torrent is enabled
Adding trackers to the torrent is enabled
Creation of private torrents is allowed
The max file size is 100.0 MiB