Posting your work on the forums is easy. Click the collaborate tab at the top of the page. Choose the appropriate forum for your work - Offline for music made with music production software or Sequencer for songs made using the MODEM sequencer.
If your post is about is a brand new work and you are looking for collaborators, click the 'Post new topic' button. The new topic form loads and you have to fill in the details. Use the dropdown menu to choose your work. That way MODEM will automatically put a link in the forum post to your work so that others can easily listen to or download it.
NOTE: - Some users have trouble with the security key, sorry if you find it difficult. Some of the letters and numbers look quite similar. It needs to be this way to stop spammers abusing the system.