Is there a way to store threads that you want to keep for future reference?

What I do is click on "Topic Options" and choose "Add Topic to Your Watched Topics". Then when I go to "My Stuff" and click on "watched Topics", it's right there. Or you can print them to a PDF and save them on your computer. Or keep a paper file.

Or, since each page has a unique url, you can save the page as a favorite or bookmark in a folder of Threads links, in your browser. If you use a service to sync browser bookmarks/favorites, it can be available on each machine you use.

Thanks to you both.

I will usually e-mail the thread to myself and then save in a folder.

I use the watched topics method. The plus to that is you get an email if there is an additional comment made to the thread.