The following persons have some additional abilities such as changing usernames, blocking spam contents, resolving conflicts and handling similar issues. Please contact them in any case of such issues.
Why is my IP address blocked?edit
If your ISP uses dynamic IP addresses for your connection, the chances are that your IP address might have been used by someone else in the past for spamming and might have been listed as spammy in the DNSBL database (http://www.dnsbl.info/). You need to contact the corresponding database operator and request them to remove. If that doesn't work, you can try requesting an account. To request an account, send an email to karthikeyan[at]swyde[dot]com with your desired username.