Duplicate keywords in URL?

[CFSSEO]

Is there such a thing as keyword stuffing URLs?  Such as a domain name of turtlesforsale.com having a directory called turtles-for-sale that houses all the pages on the site.  Every page would start out with turtlesforsale.com/turtles-for-sale/.

Good or bad idea?  The owner is hoping to capitalize on the keywords of turtles for sale being in the URL twice and ranking better for that reason.

[Eff-Commerce]

We have done similar in the past but rather than repeating the URL you could use /turtle-to-buy which is similar and as Google is now using similar terms that may be more positive in the long term.  We see great success by mixing it a bit with associated terms.

[davebuts]

Sounds like they are wanting to make turtlesforsale.com/turtles-for-sale/ their homepage, which is quite strange. "Keyword stuffing" URLs like this will not help SEO in any way. I would advise against it and leave the homepage as turtlesforsale.com.

eg. for other pages on the site: turtlesforsale.com/state/city/ is better than turlesforsale.com/turtles-for-sale-in-state/turtles-for-sale-in-city/

Like most things in SEO, think of what is better for humans. The first example is much cleaner and easier to read, and for SEO purposes, there would be no difference between the two if all other factors were the same.

A similar question was asked (and answered very well) here: http://moz.com/community/q/url-seo-better-directory-structure-vs-exact-keyword-phrase