Quote:
Originally Posted by dakwegmo
Based on the statement above, you are incorrect. Google image search finds the image file 20080528234335_uga_rosebud.jpg when you search for simply "rosebud" or "uga rosebud". So having the underscore doesn't mean I have to search for "uga_rosebud" in order to find this image. It's not that big a deal, but I didn't want people thinking they had to replacing underscores with dashes in hopes of improving the search engine ranking. If there's any difference between using - and _ in file names the difference is negligible.
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I think some references are needed from my side to explain my statement.
Official Google page:
URL structure - Webmaster Tools Help
Simplified version:
SEO: Dashes or Underscores?
I would still use dashes instead of underscores. The image above can be found with "uga rosebud" because thats the alt text of the image. Not because it file is named with an underscore.