I am going to miss being able to click on my name and find all posts started by me and posts I've made. It helped me keep track of my ads and I was able to do it to other people if I knew their name but couldn't find their post or ad.
If you click on your username in the top right corner and go down to "your content" you can see all of your posts. I'm not sure it can be broken down into just posts that you've started, but it shows all of your posts.
Update- If you go to "view your profile" after you've clicked on your username you can also go to the "postings" tab, and at the very bottom after your recent activity you can click on "view all posts by", which will show you all the threads you've started.
