Should I change these "Overly dynamic URLs" ?

[DavidSpivac]

Hello,

My client have pages that look like this: www.domain.com/blog/index.aspx?blogmonth=1&blogday=10&blogyear=2012&blogid=256

Question 1: SEOMoz say they are overly dynamic. Is it really in this case as the numbers indicate the year, month and day and do not change?

Question 2: Should we change the URLs to proper SEO friendly URLs such as www.domain.com/keywords1-keyword2? The pages are already ranking well and we worry that changing the URL may damage the ranking?

Do we risk the page to go down in ranking by creating SEO friendly URLs? (and using a 301 to redirect from the old URL)

[AlanMosley]

A 301 redirect will leak some link juice.

But i would do it, as the look scruffy and dont help conversion

There are things you need to do when you do this job

1. make a url rewite from pretty url to ugly url

2. make a 301 redirect from uglty url to pretty url

3. either create a outgoing rewite to correect all internal links, or replace all internal links manualy to point to the pretty urls

[DavidSpivac]

Thank you Alan.

I understand the second point but I am not sure aabout the first:

1. make a url rewite from pretty url to ugly url. (Did you mean from Ugly to Pretty?).

Regarding the 3rd point, due to the fact that the site has specific landing pages and page titles, we will manually point to the pretty URL.

To conclude, based on your comment, I believe the best solution in our case is to create  301 redirects from ugly URLs to Pretty and SEO friendly URLs.

Thanks you

[AlanMosley]

Lets say you have ugly url page.aspx/param=value

the ugly url works it renders a page using the parmeters in the url.

having a pretty url rewite to the ugly url will still renders the page the same way.

but then you have both the pretty url and the ugly url that can render the page casing a cononical issue, so you much 301 the ugly url to the pretty url

See url rewiting half ay down the page
http://www.seomoz.org/ugc/microsoft-technologies-and-seo-web-development