Tags (such as just posting "tag," "tagging," "/tag," or pretty much anything that constitutes a simple, spammish post with no other, qualitative content, just so the thread shows-up in your ego-search) is tagspam.
Tagspam is an actionable offense. We can bring out the *** Ominous Redtext™ *** for it. So don't do it. Use the "Bookmark Topic" button at the bottom-left of every thread; that will place that thread in your forum bookmarks, which can be located in your User Control Panel (User Control Panel > Overview > Manage Bookmarks).
While warning for such things is rare, we're not above merging all tags we find into an archived megathread just so everyone gets reminded of that thread instead.
