An interesting post on Best Practices for SEO Urls in Building CMS in SearchEngineWatch forum. Its very important that developers consider the following checklist before they plan on their next CMS sofware.
Keywords in URL’s
Use the title 
tag or the page name when creating urls automatically.
Stop Characters
Google/other search engines limits their indexing when they find specifica variables such as ? & =. Better to avoid these characters and produce a url that is readable both for users as well as search engines.
URL Readability
Use hyphens (-) when you join two words in the url and make sure that it is in lowercase. Also, in comparison with underscores (_), search engines prefer hyphens a lot.
Session Id’s and Cookies
Google Spiders do not accept cookies and sessions for many reasons including duplicant content issues.
[img]http://www.hairstylestop.com/wp-content/uploads/2008/07/angelina-jolie-hairstyle.jpg[/img]
Even Angelina Jolie can have a bad hair day! Angelina Jolie is seen here attending the 23rd Annual Independent Spirit awards in Feb 2008, her hair is completely all over the place, there is no style to it and literally looks like she just woke up! With 4 kids and 2 more on the way who can blame her!
Welcome to the Hairstyles Top. Here you will find the latest top hair style pictures, and advice for new hairstyles: formal hairstyles, teen hairstyles, short hairstyles and sedu hairstyles, etc. Lots of celebrity haircuts.