With the recently updated P2 Resolved Posts plugin, your WordPress blog can now be a full-blown issue tracker, given that it’s running the awesome P2 Theme.
You can see it in action on make.wordpress.org/systems, where red posts are unresolved issues, and green posts are resolved. Sidebar widgets can also help list all your current unresolved posts as well as recently resolved ones, filterable by tags. And don’t forget about the already existing features in P2, like @mentions and to-do lists!