and I followed the originalcontent tag to see if anyone is using it. seems like many are... but not as a first tag. So I don't know how many people are searching for posts using the tag: orginalcontent

you can go to your feed. click on NEW and choose from various tags. Then if you want to test out the usage of other tags... go to the website url/address and delete the tag that is in the address and replace it with any tag you think might be good. See how many posts are using it. If any have it as their first tag, etc.
Good luck!