I started asap after the three days ban, that was 1.5 month ago. If I get caught again my main acc is banned, so what I make a new one it's end of the expansion anyway.
Different people have different means when reffering to the word "main" account, anyway. The general rule here is - do NOT bot on account you cannot afford to loose! @gazp - If you are going to suicide bot, right after 72h suspension, better do it with care this time. Do examine for yourself why you had been banned on first place, then change your patterns and could bot again.
I get 72h warning more than 1 year ago on main account, still here botting ^^ but now, I just use CR's for PvP, BgBuddy, questing and some grinding monitorized. If I wanna Farm gold hard, take my other accounts and run GB2 or Instance GPH optimized.
Actually, just like in real world, your account's record on Blizzard side is getting clear after some months, some people here believe its after 6 months or so. In other words, you can have multiple 72h suspensions per account, as long as there is 6 months between them.
Just dont be greedy, bot for 6h not 20h and dont do dungeon buddy, botanica or whatever is hyped atm. And if you like your account, dont bot on it at all ^^ There is literally no way to bot on your main account to earn money, if you bot on your main account, do it to earn some gold and be happy with that little gold. I make like 2k-3k a day thats enough to pay my game time + some basic extras.