I too prefer a "subscribe" button vs. a notify. The notify just tends to clog your email inbox, whereas the "subscribe" button doesn't have to give you notifications but stores all the threads you follow in one place on the forum or app. If you go dark for six months and return to the forum, you ca go to your subscribed threads and easily find new posts to your subscribed list right in your subscribed tab.
Seems like It would be a simple add-on to the fog which would help a lot of folksy hi in typical woodworker fashion are finding workarounds or "jigs" if you will with browser bookmarks, word docs, Evernote, etc.
I wish they would add a true "subscribe" button as well.