This means that we have nobody has confirmed that the bug is real. We hope to gather a small army of responsible volunteers to regularly go through bugs for us. The bug gathers a certain number of votes. One implication of this is that it is worth your time to search the bug system for duplicates of your bug to vote on them, before submitting your own bug. If we can spread around knowledge of this fact, it ought to help cut down the number of duplicate bugs in the system.
Users now have a certain set of permissions.
To see your permissions, check out the user preferences page. However, anyone may add a comment to any bug. An initial stab was taken to decide who would be given which of the above permissions. This was determined by some simple heurstics of who was assigned bugs, and who the default owners of bugs were, and a look at people who seem to have submitted several bugs that appear to have been interesting and valid. Inevitably, we have failed to give someone the permissions they deserve.