What I've been able to gather so far about bans, the first day there were no bans but several J-Mod sightings and cases of J-Mods speaking to bots, in one case J-Mods spoke to the same guy on 3 separate occasions in the two days V3 has been out. It seems they were targeting people with history of using V2, or people who were spending a suspicious amount of time in there (like 8+ hours a day) or in some cases may have just been world hopping at random.
It's possible they've been able to get information from snapshots that they could use to help identify others using the program. It seems like those who spent an inhuman number of hours at the MTA have received 10 black marks, and the others who were caught, 5 black mark bans.
I was intentionally using a lot in the run up to releasing V3, without incident so whatever it is they caught onto is a new development after some kind of study or observation. What I've done so far is update a few potential weaknesses in the program, and made some small adjustments that will make a big difference. If my theory is right it should be much safer after this update. I will also not further delay putting the monitering system in to warn if you're spending a suspicious amount of time using it.
J-Mods have been specifically targetting the bot, I'm not sure how long they'll keep it up, but I believe the risk of this kind of attack can be brought to an absolute minimum with the right updates, and using responsibly of course. Remember the current climate is not as steady as say a month or two ago where you could get away with 12+ hours a day with maximum risk half a black mark, but when 3.01 is released I think it certainly will be safe to use 2-4 hours a day quite comfortably and more as long as you don't do it too much. We'll have a clearer idea with the hour monitering system in place.
If you want to keep the chance of being caught to zero percent, don't use any bots, if you want to play the percentages maybe wait a while and see what further action Jagex may take, I know a few of you are already doing this. When the climate settles down is the best time to bot, although I will be botting a lot with 3.01 and believe it will swing the percentages back in our favor. There is no reward without risk and people have been complaining here that they lost their high level mage accounts with loads of money, maybe you wouldn't have that much money or high a magic if you'd never used the bot before, so you should understand there is risk involved but also reward. I cannot stop Jagex taking action inside RuneScape and attempting to catch people out altogether, but I can help swing the percentages back in our favor.