The Excluded URL Word List has tripped me up a few times, with it taking out little words from page slugs without me noticing.

I believe I can just delete that list, but I'm curious as to why it exists in the first place - is to it create better page paths SEO wise (i.e. removing un-indexable keywords), or is there some other reason behind it?

Also, why is is populated by default? I appreciate the feature being there, but shouldn't it be empty to begin with?

I can think of at least one case where you'd want to prohibit a word from appearing, in particular the word 'tools', because if you create a page with that name it conflicts with c5's tools folder and returns a blank page. That's however something you'd just want to prevent, not remove from a path (I've had to rename a few pages to things like 'finance-tools' to get around this, but I'd want the word tools still in there). It's also something that only affects top level pages named that.

Can anyone explain this feature?

-Ryan