A lot of times you may come upon a juicy-smelling "information scent". Now you have a decision of whether to extend your lunch break and cut into work by following the scent (bad) or abandoning it (painful, and possibly bad).
One thing that has worked for me is using either delicious or more recently instapaper app to save the link (instapaper will actually sync the entire article back your iphone/pad/android). Pang of pain is largely avoided, and I can decide later whether this bit of info was worth reading, by comparing it to my other saved articles in the app at the appropriate time.
Let me guess, you're discussing that article 90 seconds in the future with Rorschach.
Actually I spawn a copy of myself for every hyperlink and just keep reading. Merge on weekends.