Description:
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I added a note to one of the documentation pages and then went on about my business.  The next day, I accidentally hit the back button in Mr. Browser and ended up at the add page again.  So, a second copy of the note got added to the docs.

Might I suggest, that you run a checksum against submissions by users and compare them with existing notes in your documentation.  If the note is from the same user and its checksum is identical, its a good bet its an instant replay, not something new.  MD5, for example has a pretty small chance of a collision.

This would reduce the junk in the docs and/or eliminate the need for a human to scrutinize the docs carefully for duplicates.

Also, I looked around for a way for me to delete the duplicate but I didn't see one.