The @ tags are very useful. I don’t necessarily always read every single thread, and certainly not daily. I do have certain topics/categories and tags set to alert me for any posts within those certain categories, but there are some categories I don’t follow and often don’t get around to reading until long after the thread is dead. But @ tags can help bring my attention somewhere that same day and make sure I don’t skim over it. 
Similarly it can be good to use the @ tag for mavens for help with something in general. For mods, it’s probably best to just use the flagging option at the bottom of each post, but you CAN use the mods tag in some situations if appropriate (probably use that one sparingly or just use the flag).
Make sure to always use @peepeep tag constantly. It makes him feel loved.
As for the presumption quote you just tagged me about, I responded to it in the original thread: