Putting tags when you are just responding or commenting.

this of course works. in mylot rules,you are not allowed to post double discussions. so it asks you to do a search before you start to post. at this time,tags will make some use.

I personally sometimes tag replies, as you might get credited on your earnings who knows but the way I see it better to tag than not too.

Yeah, I know how you feel, I don't use them anyhow, you can actually disable it at the settings, it's really tasking and makes a little more delay and more tendency for mylot to lag behind. Anyhow, it won't hurt, at least it's not forcing us to write some tags. As for who's responsibility it is, I don't think it's the responsibility of the author, perhaps it's for those who use the search bar, it's easier to look for them if it is tagged.