When trying to respond comments from my readers, I get the following notice:
"Sorry, you've been banned from commenting on this blog.
Either your comment content was found to contain spam, or your IP address (or a subnet of your IP adress) has spammed this blog before.
1: How can I unblock my IP address? I can't find it on hte admin interface.
2: How can this happen? Is it because I'm at a university behind a proxy?