Some users have been tagging dozens of people on their posts in hopes of getting more upvotes or hoping to get noticed by those tagged users. Such behavior is point farming, and will be treated as abuse of the point system. Any instance of that will be sanctioned with a strike.
If you get tagged in such manner, feel free to contact a moderator or report the post.
Tags from teasers are a gray area, as it is difficult for moderators to verify if tags really are asked for. Those who want to see your build can follow you, you don't need to tag them.