There are two types of mod rewrites. Each meet the same purpose, but the advanced URL rewrite is more search engine friendly. The following examples will give you an idea of the important factors.
Non-URL Rewrite URL
http://www.yoursportsshop.com/shop.php?cat_id=1&item_id=2
The above URL indicates to the database that the returned information should be from the category with id equal to 1 and the item id equal to 2. This works fine for the system because it understands the variables. Many search engines however do not understand this form of URL.
