Question for Tumblr experts

I'm working with tumblr for about a year now, I've created many blogs (mostly nsfw), got many of those terminated by tumblr, but figured out that, basically, it's a race between you and them, and if I manage to stay a bit ahead I'm fine.
However, I never figured out how Tumblr finds and decides which blogs to terminate: do they have bots for that, or some huge team that checks blogs manually, or maybe they just swipe blogs randomly from time to time? Any thoughts on that?
On a related note, is there any cloaker on the market that could be suitable for tumblr even if they have team that checks blogs manually?

Thanx
nix

how many ips do you use?
do you put any ads on them?

Currently, only one ip. But I have a dynamic ip. But I used to work with private proxies and still end up terminated pretty soon.
Yes, I put ads on them. I used to put direct affiliate links, but now I use landing pages.

Try to use different browsers (maybe even in virtual machines) to provide different User-Agents & OS fingerprints. Also, use random proxies at the same time. It should help!

I'm currently more on the side of using cloakers to cover my links for the tumblr review team, that should give me some nice advantage. However, it seems that noone is using cloakers on tumblr so I really can't say would that be of any use.
Anyone happen to have some advice?