in my latest batch I got many photos rejected for including the  words 'horizontal' and ' vertical' among my keywords. I assume these aren't allowed on SS Just wanted to let you know.
but while including them I though it could be  helpful  when searching for vertical or horizontal images.

never mind,I will bear  that in mind  for future uploads.

I don't know if it's a part of SS policy or a particular reviewer's opinion but in my latest batch every single photo containing either of the keywords were rejected but  I got this message for only one of the rejected photo: [quote :Do not use horizontal or vertical as keywords. [/quote].
for the rest of the rejected photos I got this message: [quote Your keywords must be in English, and they must directly relate to the image. Please edit your keyword choices and resubmit. [/quote]
obviously my keywords  were in English but just in case before re-uploading  I removed some borderline keywords which they may have considered  as irrelevant ,but I am pretty sure  the problem was with the two mentioned above.

If this is official, then surely SS can detect those words during the submission phase and request that they be removed, after all they are able to remove duplicates/redundant words, and words with incorrect spelling. 

So happens I just submitted a batch with those as one of the keywords. Like leaf, I use them once in a while.

ShApISO

At SS, I've had quite a number of vertical shots accepted lately with "vertical" in the keywords.  I'll watch that from here on out.  Thanks for the info.