Ok first, the "goblins" can easily observe your posting patterns and the number of items you post a day using the TSM addon. If they feel you are a bot from observing your posting patterns, they will report you to get rid of the competition, (either that or buy from you if you are crazy undercutting).
Second, why would you want to post 100 stacks at a time, it just crashes the market and encourages massive undercutting, just post 20 at a reasonable price, then come back 2 hrs later (or set HB relog to) and post another 20. This is so easy to set up in both Salesman and Auctionbuddy, I don't know why you wouldn't.
I've AH botting 3 realms now for around a month, cycling between them, with up to half a million in AH value up at any 1 time, but a real variety up. I do get the odd whisper, but not to ask if I'm a bot, mainly people wanting to do deals on transmog stuff I have up. No major probs apart from that.
I'd also recommend botting in Undercity for horde (nice and quiet, easy access to mail and gbank), and Shattrath for alliance (same as b4), all other ally locations can be a little busy and the pathing can look suspicious after a while.