Importance:
Low
A member starts a thread asking what is the best format for filename in Google's index, whether the seperate words with-hyphens, with_underscores, or with%20spaces. Other member note that in the past, GoogleGuy has suggested or hinted that hyphens are best. He now says is doesn't matter much.
GoogleGuy Says: [
Link to quote]
Shouldn't matter much. %20 is just ugly though. :)