I can only speak for the QA process, but multiple bug reports of the same bug generally aren't helpful unless you have new information to report. For simple things like a stuck location, just the /loc and Ward/Dungeon it's in is sufficient and we don't need to see those more than once.
For more complicated things that seem to have no reliable steps to reproduce, multiple reports are useful provided that you have new or at least different data for us to work with. And the more detail you can provide on character build, party makeup, spells and effects in use at the time, etc, the more helpful those sorts of reports are.
In general though, anything you think is a bug should be reported. Even if the game is working as intended, it clearly is confusing you so perhaps better in-game feedback is required so you and others aren't confused.
My suggestion is that if you've already entered a bug report, don't report it again if you have nothing new to say. Wait for the next major release and see if it got fixed. If not, report it again. If it's especially hindering your gameplay, start a thread here to discuss it with others. Not only may others have a temporary work around for you, but it let's more people chime in as to their experiences. We often get more information on a tricky bug from a discussion thread here than a dozen isolated bug reports.
But please don't start threads about stuck locations.
~Silthe