So, for example if I write something about photography in Spanish, I add the #spanish to the article and also add #photography, it will be deemed as spammy because it's in Spanish? Or it's ok to write something in another language and use the right tags, although the article isn't in English? Thank you!
It's OK to use whatever tags make sense for your article. In your example, since your article is about photography and in Spanish, it would make sense to use #spanish #photography and maybe #information, #castellano, #blog. In your example, when it comes to the #photography tag for example, you're not using it for a photograph but instead for an article about the art of photography, which is very relevant to it as well.
Alright! Thank you for the clarification!