You're probably not getting a lot of attention, because your title doesn't give any indication of what your thread is about. You could mention spam, abuse, prevention, policy, etc. Just saying "weird shit" is not interesting for almost anyone to click on.

You can read more about merit, here : https://bitcointalk.org/index.php?topic=2818350.0 , this is the official announcement thread from the forum owner at the time of it's implementation. Within this thread is every question and discussion about merit that has been thought of as relevant.

Tag refers to a DT (Default Trust) member leaving a negative reputation on your account. The ratings left by DT members are "Trusted" by default and therefore hold a lot of value when considering the standing of your account/reputation. You can read more about the Trust system here : https://bitcointalk.org/index.php?topic=211858.0

One last thing, this is not the correct board for all of these questions. I would assume it to be more appropriate for this kind of thread to be posted in the Beginner's & Help board. I also would suggest utilizing the Search function within the navigation pane, as this will save you a lot of time and posts.