You can easily check this by looking at the statistics of my account.
I know I can easily check because I already have. You were running 9 accounts from the same bot.
We can't even freeroll from my wife's account, (we receive IP error) at home, and at work my friends were unable to freeroll because we all share the same IP obviously (genuinely different people btw, but they lost interest, this was a couple of years ago), these should be really determined people running bots from different IP's.