Is it worth it to change old URLs to lower case?

[Travis-W]

Hi Mozzers,

My site has a ton of URLs with upper case letters, such as http://www.consumerbase.com/Lawyer-Mailing-Lists.html

I know upper case URLs are bad, but I am wondering if it is worth it to change old, already created pages.

Should I change these URLs to all lower case and 301 redirect the old URL to the new one, or will that temporarily de-index all of these pages?

Thanks!

[BeardoCo]

In my experience I don't think its going to negatively affect your SEO it is just a better practice to keep everything lowercase.  The only thing you do not want is the search engine viewing the same page 2x as separate pages creating duplicate content.  If these are relatively new pages I would go ahead and fix them, but if they have any significant link juice to them i think its fine to leave as is.

[WhoWuddaThunk]

It all depends on server types.  Apache servers fetch the same exact page regardless of case, where as a IIS-Microsoft server considers the upper case and lower case pages to be different.

You have an Apache server, so I wouldn't worry too much about it.  If you ever consider switching servers, though, you will want to take a look at your URL's.