gouri - 2:23 pm on Aug 18, 2010 (gmt 0)

2. Domain with hyphens between words doesn't have the same effect. For a URL, is it better to have the keywords after the domain separated by underscores or hyphens? widgets.tld/small_green_widgets or widgets.tld/small-green-widgets

Or would it better to have the URL as

widgets.tld/smallgreenwidgets

since some members have posted above that exact match non-hyphenated keyword matches seem to have some benefit in the SERP?