<li class="list-group-item"><b>Name</b> is your human-readable name (to be shown on the leaderboard).
<li class="list-group-item"><b>ID</b> is used in the URLs for your repos (must be composed of lower-case letters, digits or hyphyns, must start with a lower-case letter).
<li class="list-group-item"><b>SSH public key</b> is needed if you want to access repos hosted on Gonito.net.
<li class="list-group-item">ID cannot be changed once it is set up.
<li class="list-group-item">You don't need to specify your ID and SSH public key, if you don't use private repos hosted on Gonito.net.