There are many ways to find the threads that you are involved in.
The easiest way is to click on the Quick Links > My Recent Posts. This link is in the upper righthand corner of every page on the site, so it is always available. This is also a good place to view the days posts, so you can see what everyone has been talking about in the last 24 hours.
You can also go to your My Profile and change your settings to allow you to subscribe to every post you make so you are notified via email. Go to:
My Profile > Edit Options > Messaging & Notification > Default Thread Subscription Mode
You can then configure your account to subscribe you without an email notification (this places the posts notification in your User CP). Or you can have it send you an email everytime, daily or weekly.
HTHs
I was also considering adding a blogging/journal feature here in case some of the community wanted to try out blogging. I'm focusing on the resources right now though.