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Lame_Wolf - 1:52 am on Jan 7, 2013 (gmt 0)
No, but the example given was created after Google was created. Your comment of "So do most sites that were around before Google." gave the impression that the WebmasterWorld Adsense page was created before Google was around. Yeah, right, you expected Brett change the naming convention of quite a large site in mid-stream?
I have underscores on my site,(with no problems) but they were made years ago. Now, I create pages using hyhens instead.