Blockchain is so many things to different people. At Steemfest2 last year the possibilities were intoxicating. There were so many ideas, so many angles, so many possibilities.
Open Data
One of the things I love most about blockchain tech is its transparency, its openness. You can see transactions and interactions happening in real time. I had an infuriating reminder today of the status quo. I made a post on stackoverflow and got a downvote. I couldn't see who downvoted me, let alone know why they did it. Just a gentle reminder of how much I have gotten accustomed to decentralised public blockchain projects like Steem.
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It's not always straightforward to see the transactions and interactions happening on public blockchains. The data is usually cryptic and resembles, to the uninitiated at least, images from the matrix. We forget how lucky we are on Steemit with tools such as steemdata by 
I came across some links today that I had to share, discounted courses on Udemy. If your a data geek you may be interested.
Ok not exactly free but as good as!
Thank you for reading this. I write on Steemit about Blockchain, Cryptocurrency, Travel and lots of random topics.
Images from pixabay.com