I’m not sure where I picked up this habit but I’ve been instantly buying (preferably used and cheap) any books that seem semi interesting when I see them shared by someone I follow. For example, this book Just Listen by Mark Goulston was recommended by Michele Hansen on Twitter just the other day.
Because I love books on all aspects of business and with a recommendation like that, I think I would be doing myself a disservice not to get it. The same goes for programming books or even fiction when I see friends talking about it. Besides buying them I’ve also started writing on the back cover who recommended it:
Now when I revisit this book years from now I know exactly who recommended it, and can tell them thank you. It’s just a small way of showing appreciation.