Shoutbox

Hi, sorry if this has been posted before, I've searched but couldn't find the answer.
Anyway I just wanted to ask a quick question, I recently deleted and blocked a contact on my msn. For a couple of weeks the contact was off my list, but then I had a change of heart and decided I wanted them back on my list.
so I added them back on via the privacy bit on the options sections. Now the said contact is back on my list and I can see when they're online.
Now because I had deleted /blocked them, my question is would the contact have known I had deleted/blocked them and when you do such a thing does the deleted/blocked contact have to accept you again?

Many thanks in advance.

No, the contact wouldn't know if you blocked/deleted them and no, you will not have to be accepted again as long as you were still in the other contact's list.