GainLink.com supports SSL connection. You can use the GainLink.com service via the more secure HTTPS mode - https://gainlink.com.
However, because the server uses a self-signed SSL certificate, and it's not from a popular issuer (such as VERISIGN), your browser will show you a warning message. For instance, Firefox will show the following:
This Connection is Untrusted
You have asked Firefox to connect
securely to gainlink.com, but we can't confirm that your connection is secure.
You can safely ignore this message, because the purpose here is to use an HTTPS connection, and the SSL certification issuer is of no importance.
Click "I Understand the Risk" and "Add Exception."