Blank Spaces in Video Tags


I've Got It
I've been trying to find an answer to this question and it's been bugging me forever.
Are blank spaces important in video tags? That is, is there any tangible difference if I write 'Bible Illustrated' or 'BibleIllustrated'?
I would assume there is, as YouTube recognizes this as two different tags, but I'm curious what you guys think. :)
Also: I just wrote 'tags' in the 'tags' field below. :D