Static URLs are known to be better than dynamic URLs for a number of reasons:

   1. Static URLs typically rank better in search engines.
   2. Search engines are known to index the content of dynamic pages much more slowly than that of static pages.
   3. Static URLs look friendlier to end users.

Example of a dynamic URL
http://www.yourdomain.com/profile.php?mode=view&u=7

This tool helps you convert dynamic URLs into static looking HTML URLs.

Examples of the above dynamic URL re-written using this tool:
http://www.yourdomain.com/profile-mode-view-u-7.html
or
http://www.yourdomain.com/profile/mode/view/u/7/
Note
You will need to create a file called ".htaccess" and paste the code generated into it. Once you have created the .htacess file simply copy it into your web directory.
URL rewriting of this type will work ONLY if you are hosted with Apache Server.

For More tools, please visit SEO CHAT

For those you use wordpress

PERMALINK TEXT

/%category%/%postname%

How the selection of a URL affects search engine positioning.

There is some difference of opinion on the subject of whether or not the URL of a website affects its search rankings.
Let us first note the golden rule of Search engine optimization.

Though shalt not build a website for search engines, but rather for human visitors.
There is evidence which indicates URL selection affects search rankings.
The two main factors seem to be:

1. Extremely long URL’s seem to be considered hard to type by a human, therefore an attempt at spam and
2. Given the fact that a long URL is considered an attempt at spam, it would then seem to be true that search engine rankings can be improved by the use of keyphrases in a URL.

An example of the first point above would be a URL that looks something like this: www.roses-chrysanthemums-tulips-and-more.com. No legitimate company would actually want this domain, nor would any human care to type it. It is an obvious attempt to spam the search engines. So, we remember the Golden Rule of Search Engine Optimization. Some studies have shown that extremely long domain names appear less frequently in the top twenty results than do shorter ones.

That being said, empirical evidence does support search engine indexing of URL keywords. Both Google and Yahoo!, for example, display in bold the portion of a URL that matches a search string, which seems to me indicative of indexing. However, I have been unable to ascertain, either personally or through extensive research, any truly significant occurrence of URL’s in the top twenty results which contain the search string.

The lesson learned here is this: name your website what would be a logical name – for instance, after your business name. Make it friendly to a human. If a search query happens to be part of that business name, then fine. Don't, however, engage in keyword stuffing in the selection of the URL.

Search engine friendly URLs should in an ideal world hold evocative keywords. The URL shouldn’t be too long either. Use your site’s structure show be reflected in the URL. Take a web directory as a good example and how the categories and subcategories are used as levels in the navigation. Example below is short and descriptive:

http://www.the100lists.com/Business/directory/22

Try to avoid using variables (or dynamic parameters) in the URL, as many search engines would only use these pages as supplementary search results. Some search engine may not spider them at all, particularly if they have too many variables in the URL. Example below is of a URL with dynamic variables:

http://www.the100lists.com/some-page.htm?id=123&value=4

One way to avoid these parameters is to mod rewrite the page. Also stay in mind that the keywords that appear in the URL give the page higher value and latent ranking for those words in search engines. Another high-quality reason for using keywords in the URL is to provide the being browsing your website an idea of where they are in your site.