Okay so in my alt account, whenever I used to post on a thread, it was automatically added to the subscribed threads section and it was helpful because whenever someone used to post on it, it was bumped in the section.

The question is that how to enable that feature on this account, maybe i would've accidentally enabled it in the options of alt account and now I forgot how to

Go here: http://forum.toribash.com/profile.php?do=editoptions
It's the 4th option, or the 2nd of Messaging & Notification

Oh okay got it, there's a particular section for Subscribed threads. Thanks for help