Holy fuck people.. It's not rocket science.. Yes, Tumblr is going to delete your blog if you don't play by the rules. But there are a lot of ways to bend those rules and not get banned.
Example:
http://tubesexfan.tumblr.com
(just sharing one new Tumblr, because I know you haters will report it because you can)
But I have many Tumblr blogs. Not one deleted since I started them. I don't post affiliate links and I never use ads. I just use it for traffic and SEO purpose.
Just my
