Vérifier l'état réel d'un Yahoo! M contact
Check the real status of a Yahoo Messenger contact!. Discover if a contact is Online, Offline, or in Invisible status!, and know if your contact has blocked you or if is really offline. Enter the contact's Yahoo ID and click the "Check Status" button.
If the result is "Online" and your contact is not in your friend list as connected, then he has blocked you!, if the result is "Invisible", then your friend is logged in but he don't want to be seen.