There are several ways to check back. I usually "bookmark" the thread I want to keep up with.
Just above your screen name on this page you will see the words Bookmark Watch Add to topic list. I click on Bookmark and then save it.
To get again Go to the top of the page. Under Quilting Board
there is the words "My Bookmarks". Click on that and find the thread you are looking for. Hope this helps:)