I have lots of yahoo,rediffmail and ovi mail account. I started to created YouTube accounts with them manually. I created about 100 accounts in 3 days time. All of them working fine. But yesterday i created about 60 accounts at a time. And in the morning i saw only first 15 accounts are ok and i can't log in to the rest of 45 accounts. I know its happen coz i created all the accounts from the same IP. Can any one give me some suggestion about this issue. I need to create about 100 accounts per day.