I like anonymous FTP, but its old and dated. Is there something similar that can split up files, checksum them, then upload a type of preamble so if your connection gets cut the bad parts will be auto deleted on the server end and you can resume your upload until it successfully completes? Basically anonymous ftp with bit torrent like features.
tl:dr
You can't allow anonymous users to delete files on server, but it's no good if the connection gets cut and only part of the file is uploaded. Wut do?