Auto-detect duplicate/similar issues on entry

It would be very cool if you entered in an issue, and Jira matched against existing issues.

If the match probability is good, then you could suggest:

"Are these issues the same? Would you like to add your report as a comment to this issue?"

"Are these issues related? Would you like to link them?"

In all cases, you could prompt the user to vote/watch the matched issues.

This would reduce the number of duplicate issues - and would enhance the quality of the information entered.