You can run a Tumblr blog and still remain anonymous. It'll take a while to get going though. I have 2 friends, both running a blog. One runs it specifically as a femdom/kink blog and gets donations/money from people, another runs it as her personal every day blog and has gained enough followers that people just buy her stuff off her Amazon wishlist to be nice (got a dang Wii U like that!). Neither of them post any identifying information (although I think the kinkster blog one might post some body shots of herself on occasion).
There's a few sites that I use daily to make roughly $400 a month for very little work. /r/beermoney is a lot of help for me. I mainly use Swagbucks, Perktv, Instagc, and Bing rewards. Swagbucks and Perk let you run advertisements on your phone to make $15+ a day. Bing rewards is done by using bing as a search engine and will make roughly $5 every 20 days per account with a maximum of 5 accounts per household.
Here’s a good example of how lead sales can work in real life: My second website, Life Insurance by Jeff, brings in a ton of traffic from people who are searching the web to find answers to life insurance questions. While I used to have the website set up so I could sell these people life insurance myself, it was a lot of work to process all the different requests and clients. As a result, I started selling the leads I gathered instead.
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As you can tell from the list, I just stick to the higher paying and passive earning places. I am far too lazy to give it the kind of effort you do. Although in my defense, I live in Australia so I don't have access to the high volume sites like Mturk. In fact, most of that is useless here - the only ones on that list that work here are Prolific, UsabilityHub, the Reddit subs and of course Ebay. Redbubble probably works too - I haven't tried that one. I use Teespring.
While you won't make a lucrative sum by selling your photos online (unless you're a gifted photographer with in-demand images), Shutterstock will pay you 25 cents every time one of your images is downloaded, according to its website. If you earn $500, then you'll receive 33 cents per download; if you earn $3,000, you'll receive 36 cents per download; and if you earn $10,000 or more, you'll receive 38 cents for every download.