Let users delete issues they created as long as nobody else has touched changed them or posted about them.

[ctrager]

[ghost]

I would suggest add closing the issue. This will allow reopening. Although this will require certain statuses to be required.

[ghost]

For a database, checking the flag will be faster than deleting the entry with checks.

[ctrager]

We are talking milliseconds, and then every user written query and report has to check a flag.