Using irrelevant tags, especially popular tags, makes it hard to find good and relevant content.
Please try to use only relevant tags when posting!
The “introduceyourself” tag is for creating a post that tells us about you. Users are encouraged to use this tag exclusively for that, and not to reuse it.
Blatant misuse of tags is spam. Spam is discouraged by the community and may result in action from the cheetah bot.
More Info: Abuse Guide - 2017.
This was the reason why I used the tag, since this is a post introducing my personal background relevant for my Steemit posts, to allow people (especially new followers) to get to know more about myself. I have seen other well established users writing "re-introductions" after they have acquired a significantly bigger number of new followers, so I thought it was allowed to do something like that (this is only the second time I use this tag). However, if it is strictly not allowed to use it more than once, then I certainly won't do it again.
Thanks for the heads up!