Your user name or IP address has been blocked by $1.
The reason given is this:
You may use the "email this user" feature to contact $1 or one of the other administrators to discuss the block.
Note that you must log in and have a verified e-mail address to use the "email this user" feature. Creating an account and logging in are allowed even from this blocked ip address. If you didn't provide a valid e-mail address at the time of registration, you can add a valid email address in your user preferences. As soon as you respond to the verification e-mail message, you will be able to log in and e-mail an administrator.
Your IP address is $3. Please include this address in any queries you make.