DMOZ at one point was the only way to submit your site to google (I think that still applies, as a direct submission anyway).

I really don't know if it's still as valuable as it once way however I'm sure that it can't hurt and pretty sure that it still drives a fair number of engines out there...

So ya go ahead and take the few minutes to submit... Can't hurt anyway!

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Ron Boyd
website consulting (design, optimization, marketing) :: Follow Me: @orionsweb