The tags are not about the thread's content or the people responding. Anyone can add a couple tags to a thread so they can organize threads they like/want to keep organized. A tag I like for my purposes (if I'm collecting all tags labelled "Perna" for example) isn't going to necessarily work for yours. The whole purpose of tags is so people can organize stuff they like/want to use on the Net for themselves and find answers quickly. Someone tagging posts you start is a good thing, it means it is important to them.