Everyone has a google account so they can easily jump in (as opposed to bugzilla/launchpad), and soon the snowball effect kicks in.

This isn't the bug-tracking system, where it's supposed to be done by 'starring' an issue. Even there the concept is not emphasized enough so the same problem occurs.

Edit: someone else found the actual bug, the star is flush left in the blue issue header: http://code.google.com/p/chromium/issues/detail?id=84679