Comment by oblio
I'm confused. Is Pinboard something that was built by this Maciej character? Acquired by him? What was the name of the product Yahoo bought and I assume shut down? FYI I don't see any mention of him here: https://www.pinboard.com/who-we-are
Your comment reads a lot like something you'd say during a chat with friends on a sofa in a café.
Not GP but a rewrite based on what I think they mean:
Maciej knew Delicious inside out, and he knew what Delicious being acquired by Yahoo meant. So he started building Pinboard (a Delicious alternative) in 2009, caught the various exodus waves from Delicious in the later years (esp. 2011) and ended up acquiring Delicious for $35k in 2017.