Last year I found a rather easy way to rank well with tumblrs. I will mainly use them for SEO and link to my converting money sites via affiliate marketing. The goal is to create 500k unique new visitors from search engines per day to my network of around 100 tumblrs in the same niche. Yep 100 tumblrs with 5k visitors a day is the basic calculation. To avoid network destruction I will limit each account to 2 or 3 blogs. I expect some will be banned sooner or later and will create stock pile of new tumblrs on the fly. To stay under the radar I am using 3 different laptops and 2 mobile devices. During the entire time I will be traveling to a new country/city every 2 weeks. This way all my new blogs will have totally new IP numbers. Besides I will be using VPNs for my older core tumblrs that I already have. I will do everything, manually. I expect a work load of about 60 to 90 minutes per day. I don't care about followers. I am confident my content will be liked and reblogged as I build the network. At this time I am preparing the content (shooting photos myself and harvesting filler stuff) and intent to start my world tumblr tour in June. From there I should reach my goal within 3 or 4 months. That's all at this time. I will post updates when I make bigger steps.