Demcra is a non-profit website for link sharing and discussions.
Choose a unique username and enter it on the join form, along with a strong password to protect your account.
Once you have joined and are logged in, find a realm where your post fits and click "Submit Topic".
Realms are the communities of Demcra, each with it's own topics, moderators, styles, etc. For example, /r/jokes is a realm where jokes are shared.
Open the address of the realm as if it did exist, for example: http://demcra.com/r/MyNewRealm. If you are logged in, and the realm does not already exist, you can create it by clicking "Create Realm".