Similarly as the author suggest, I would also like to have a button to donate money to an article I really liked. Perhaps most of the times it would be 0.5, may

Similarly as the author suggest, I would also like to have a button to donate money to an article I really liked. Perhaps most of the times it would be 0.5, maybe 0.2 dollars. For my mental arithmetic, I use the "beer equivalents" as in "would I buy this man (author) a beer if I met him now in the street and if yes, how many". Perhaps someone can make a chrome add-on, with which you can donate an equivalent of a beer's worth of bitcoin that would be called "Give this man a beer".