The announce URL I'm given on the upload page doesn't include a port number or a passkey. This is what I see:
I'm not sure if this is a bug or not, since passkeys are added for each user when they download a .torrent, but I wanted to make sure before I uploaded anything.
You can put anything for the announce url or even leave it blank because it will be added again on download for each user. The tracker works a little different to most other sites as your passkey is unique for every torrent.