URL question for SEO...

[gritacco]

I'm thinking of creating a new url off an existing url and was wondering if there would be any impact.  For example I have the URL www.baseball.com and rather than secure a new url for a new product launch such as www.newbaseballproduct.com I want to do newproduct.baseball.com  Will this hurt my SEO rankings for this new site?  Basically wanting to figure out if this will hurt me or not?  Should I get a new url or re-utilize an existing URL... really for a landing page/micro site, etc.,

[First]

Great answer, I would just like to add that it may be best SEO practice to use: baseball.com/new-baseball-product instead of baseball.com/newbaseballproduct

Also a direct keyword match on the URL is very powerful. If the product merits the effort I would consider obtaining the URL and making a micro site in addition to creating a landing page on your main website.

2 (or even more) listing results on the first page is better then 1.

[gritacco]

Makes perfect sense!  Your suggestion was my initial thought and then went down a deep, dark path!  Thanks for the help.

[rhutchings]

The best option for sure is to house everything in one single domain.  Why not have it be "baseball.com/newbaseballproduct"?  Dont go subdomain if you dont need to- and dont go new url if you dont need to either.  Build your domain authority by maintaining everything withing a good IA through your base domain.