Leo Weese with a great piece countering the recent surge of stories claiming bitcoin is destroying the environment. Leo dives into the mining numbers and does a good job showing how it's possible, depending on your agenda, to spin bitcoin's energy usage to look catastrophic or downright minuscule, and provides some analysis on what the future of bitcoin energy usage will look like.
Murch with a great post on how popular block explorers are displaying the incorrect fees for transactions with Segwit inputs, which is causing user confusion, and he helpfully talks about the correct way to calculate the fees. If you'd like to brush up on how Segwit works, I suggest reading the Mastering Bitcoin chapter on Segwit.
Speaking of fees, this great post by the Zebpay team goes into great detail about their recent work into reducing the fees for their users. They were able to use batching, fee rates dependent on the transaction amount, and segwit, to drastically cut their fees while getting fast confirmation times. Now if only other exchanges would follow suit, that would be great
If you haven't already been scared off from investing in ICOs (or purchasing certain altcoins) then you would be wise to give this article by Kyle Samani a read about Token Velocity and how it can affect the value of a token.
Jose Maria Macedo compares the recent cryptocurrency run-up to the 2000s tech bubble and offers some ways of thinking about what to do if the bubble pops, using Expected Value calculations to try and make an objective decision.