Quadrille - 7:07 pm on Aug 10, 2007 (gmt 0)

It's not a google thing, it's everyone on the web, and this was an issue before Google was invented.

Underscores are not, never have been and never will be a sensible way to separate words, especially in URLs.

For what it's worth, spaces are even worse (if that's possible). Hyphens are not ideal, but are a common sense compromise, as the English language alternative would be a space.

For obvious reasons. :) In fact it's all so obvious really, isn't it?

And that's my last word, you'll be pleased to hear ;)