Dynamic URL

I found a good article on the net which says some interesting fact about the dynamic url for the search engine.

Dynamic URL are bad in view of SEO because of the way that dynamic URLs are created, they sometimes create nightmares in the area of search engine optimization (SEO). Therefore Search engines do not like to index dynamic URLs. Many times dynamic content is hard to spider. There are multiple reasons for this, one of them being the non-standard characters like ?, &, %, =, and others in the URL. Many times, anything after the character is disregarded. For example, we may have URLs that look something like this:

http://www.mobilejazz.co.uk/NewDeals.asp?id=290
http://www.mobilejazz.co.uk/NewDeals.asp?id=380
http://www.mobilejazz.co.uk//phwithnetwork.asp?netid=16

Many search engines are unable to deal with dynamic URLs, that is a URL containing a question mark or an ampersand. Google says that a dynamic URL with 2 parameters “should” get indexed. When we pressed a bit on the issue we also found that URLs themselves don’t contribute too much to the overall ranking algorithms. In other words, a page named Page1.asp will likely perform as well as Keyword.asp.