I have probably 100+ IPs of people and at least 30 bank accounts, but most of them are newbies.
I've slaved about 80 people with viruses over time but almost all of them removed me later even though I hid the virus with a .8 hider. I kept a few for a while, but I'm down to 8 slaves right now and one of them is nearly worthless which I think is due to other people adding viruses (he was empty when i hit him). Most of them were newbies, so they didn't take care of their IP. Lots of them reset it and I lost them due to that, others just did hard drive wipes constantly so I stopped bothering. I don't think any of them are exclusive, since their income seems to be dropping over time.
I've cracked 19 bank accounts so far, but few of them had money. Most of my money actually came from bank cracking... I've made around 2200 or so from banks, and only a measly 600 or so from spammer slaves. One account netted me small sums of money 4 times, for a total of around 600. That poor newbie just didn't get it. I'm not sure if he just didn't realise he was being robbed or if he didn't know how to make new accounts.
I wasn't taking the full amount - I was stripping about 95% and leaving a few bucks in every time. It felt kinda like when you collect eggs from a hen - leave one egg and she'll keep laying there lol. My only guess is he thought "Gee, I thought I had 150 euros yesterday. Now I have 15? I guess I was mistaken. *deposits more*"
Oh, and I wouldn't suggest cracking bank accounts if you want your IP hidden. There are *way* too many people camping banks to keep the IP safe, and when you log in it puts your IP in there with the account - without giving you enough time to delete it before pretty much everyone sees it. I did my bank cracking after people started nailing me hard and the goons got my IP and were hiding my stuff every 15 minutes. The irony is I made more money robbing bank accounts while the goons were harassing me than I did doing "normal" stuff before that. I just cracked account after account, every so often reloading my cracker from the external drive when a goon came by and hid/deleted it.