It has a max filesize of 60 MiB (larger than pomf), supports pygments highlighting (like ix/sprunge) and line numbering (without breaking copy/paste), supports arbitrary filetypes, supports on-the-fly rendering ReST pastes into HTML, deleting pastes, secret and vanity pastes and even URL shortening.
This is the most feature-complete and powerful pastebin I have ever come upon, and yet it remains incredibly simple to use.