Back in 2006 I actually had a moment where I overheard someone at a university talking about an obscure subject (synthetic biology) I had spent the last couple of years saving del.icio.us links about.

We soon had this conversation:

Wait! Are you so-and-so?

Dude, how did you know?

We've been saving all the same links to del.icio.us!

I had just finished a rotation in one of the handful of labs in the world that worked on this subject, and he had arrived to do a junior year summer internship in the same lab. Incidentally we both were led astray, in some sense, by all the Web 2.0 idealism of tools like del.icio.us; neither of us fit in in academic biology. He even took it to the extreme of opening a nonprofit to support DIY, "open source" biology ... (So very late-aughts!)