You could always "subscribe" to the threads that you have posted in.
Below the edit box, there is a section for "Additional Options." One of those options is the "Thread Subscription" option. It is a pull-down box. The default is, "Do Not Subscribe."
The other options are:
- No email notification
- Instant email notification
- Daily email notification
- Weekly email notification
Regardless of which option you choose, these subscribed threads will show up in your User Control Panel (User CP) where you can view all the threads you have subscribed to. I believe this also shows the last response to that thread.
The list can grow pretty large, if you post a lot. But as threads wind down, or you lose interest, you can delete (unsubscribe) them from the list.