Msn Block Checker is a great tool, some people call it with different names and some with different. It actually show the status of a msn contact, if that person (contact) is online according to Msn Status Checker and offline in your Msn, that means he/she has blocked you.
Msn Status Checker is a web based tool. You can use it to see a person is Online or Offline on Msn Messenger. You also can use it to detect if someone has blocked you. If your Msn Messenger is not signing in, you can use this tool to check whether your friend is online or not online.
Yes, but we do not guarantee it. As on January 16, 2004, Microsoft has patched the method which MSN Status Checker was using, Now if the person has "Only people in my allow list can see my status and send me messages" option enabled, then you will see them offline. And we can not do anything with this.
Yes, If you have All Others in allow list, everybody can see your status via MSN Status Checker.
Yes it shows the nickname (also called display name) of a person as well.
This tool may be known as: Msn Block Checker, Msn Messenger Block Checker, Msn Status Checker, Msn Status Viewer, Msn Block Finder
Actually, yes :)