There are two free bots.
Tumbstudio:
http://sh.st/O73l
This bot is used for posting.
Also TumbScrape:
http://sh.st/O75P
This bot is used for scraping content from blogs.(Basically downloading thousands of images from a tumblr blog.)
What you do is you download both, use the scraper to get a ton of images and use the auto posting bot to post the images.
You can also join my new forum:
http://webgroupwork.net/index.php
Basically this forum is intended to create group blogs.
Blogging as a group is better because instead of just you posting it'll be hundreds of thousands of people posting and the followers will grow fast.(And since Tumblr loves to ban, when a blog gets ban a new group can be created very quickly.)
Here's my tumblr group blog:
http://webgroupwork.net/showthread.php?tid=4
You can join the group and reblog your blogs stuff or you could simply post every now and then and set permalinks to whatever you'd like.
People here at GFY underestimate the power of social media.
Here's an example of a GFY member bashing tumblr and blogger.
Tumblr and Blogger are AMAZING for traffic. Blogger blogs rank VERY FAST in Google.(Probably because it's their service) And tumblr has a search engine and Google also seems to love tumbr blogs.
Just search "Porn Blog" in google and look at the results.
So if you think social media websites like Blogger and Tumblr suck just because they're free then your simply wrong.
Also join a real marketing forum if you want money. GFY is not the place for this.
(I'm actually currently in the process of writing the ultimate porn webmaster guide.I'll be selling the eBook soon. But basically i'm putting absolutely all of my knowledge of this niche into one giant eBook. This is just a small taste of what's going to be in the book.)