the best url

Hi
I’m going to add on one of my sites 50 files optimized for some keywords. I have a limited nr. of subdomains and some pages will be dynamic. Before creating subdomains and writing a .htaccess file I’d like to know if it worth the effort.
What is the best solution for url:
1) domain.com/folder/keyword.php
2) domain.com/folder/keyword.htm
3) domain.com/keyword.php
4) domain.com/keyword.htm
5) domain.com/keyword/
6) keyword.domain.com/
Please give a rating to each example on a scale from 0 to 100. The goal is to reach a good place in SERPs.
Thanks

 

I'd choose this one 4) domain.com/keyword.htm

 

Go with option 4) BUTTTTTTTT don't forget the WWW on your url.
soooo use:

www .domain. com/keyword.htm

 

what's the benefit of that over the other options? which is the difference?

 

zapita .... ummmm ... you need to do a bit of reading in these forums!

 

Link to URL Design
A good artical to read.