non-parsable tags

What is "non-parsable tags"?  Is it something you should edit?

Those are words that you do not want people to use as tags.... the, if, or, too... etc.

It's just a list of words that offer nothing toward the description of anything, so you don't alllow those words to be stored as tag words and create a lot of clutter.  You can add more words if you like..... obscenities... or anything else you don't want your users to use as a keyword.