If your webpage or blog has a URL (http://www.yoursite.com/page12.html)

Theres likely to be thousands of users using that keyword however if you define your page name.

http://www.yoursite.com/cheese-sandw...are-yummy.html)

You are more likely to be picked up for 'cheese sandwiches'

or 'cheese is yummy'

Opposed to a human and spider going Hmm, what has Page12 got on it? what the heck is it talking about.

Wordpress has a good help article on Permalinks just scroll down it somewhere near the bottom.

http://codex.wordpress.org/Introduction_to_Blogging

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