Can I tell if a blocked person is on aol?

I have the prepaid cellphone service net10 and I was wondering how to block a person's number with that service?

Okk you know how you block some one on msn I was wondering say I blocked a friend on msn and I wrote in my msn name that shes...

How do you unblock someone you blocked on aol aim

If you block and delete one of you contacts and then add them again to your contact list will they be imofrmed that I added t...

Somehow I have blocked a buddy and don't know how to unblock them.

If I block a person then delete them, is there any way they can write back to me?

Is there a way to tell when you call someone if they are blocking your number?

I forgot my username in aol. Is there a way to get it.

How do you unblock someone from your AOL buddy list?

Basically I am a teacher. I am having workers under me. I have two pen drives. I want a software that should allow access onl...