How do you block a contact from the new messenger?

Hi, I has some contacts on my Yahoo messenger, however, suddenly some of my contacts disappeared. I added all the contacts that I lost except on contact. That particular contact still sees me when I'm online. How can I block this contact when his ID...

I recently got a new computer and had to re-install Yahoo messenger. Now whenever I open messenger there is a "flash" ad at the bottom of my contact list, just above the search bar. I right click the ad hoping to delete it but the only options...

Even if you delete the address and put the address as a "spam" they still can see you on the messenger if they did not delete you from their messenger list. How can you appear invesible to them when you are available? In other words, how can...

i have someone as a contact in yahoo messenger and i dont want them to be able to instint message me anymore. Can i block them some how?

i want ot block people on my messenger list from popping up. How do i do thus?

I am getting some absuive msgs and want to block the contact. It is added in my messenger list.

theres this person that is not in my contact list but is somehow able to send me instant messages. it says hes not on my contact list but i cant seem to block him. what should i do

I am getting a person who is consistently going online to chat to me and, he is a professional scammer from a dating site. I wish to block him from contacting me and, need to know how on my Yahoo messenger please?

friend is being abused by someone she added to yahoo messenger, the person was not abusive originally, but has become so, she has tried to ignore posts but would like to know how to block nickname