For those that don't know bugs entered on BugReporter will feed directly into the internal Radar bug tracking system. And I highly recommend following the format and most importantly providing clear, step by step instructions on how to reproduce the bug.
Where they site for days/months/years and it's impossible to see how many other people have the issue, or whether anyone is going to do something about it.
Actually, filing duplicates is a good thing. They will get tracked and appropriately linked together. Not only will the number of duplicates act as a proxy for "votes" for an issue, but the varying descriptions in the duplicates may be useful for engineering to properly diagnose the issue.